Kci glock magazine 33 round I would think it is more likely that an AR upper by a third party manufacturer like PSA is more likely to have a problem using Glock magazines than it is that Glock made bad magazines, but anything is possible. 99 (Save 15%) $27. A 10 round option is available for Restricted States. You get what you pay for. [Ammo] CCI 5200 Blazer Brass 9mm 115 GR FMJ Ammo - 500 round case - $119. This magazine is priced far more affordably than Glock’s factory model which it emulates. Weight 10 oz Cartridge Compatibility 9×19/9mm Magazine Capacity 33 KCI 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols . Good magazines though. Providing a high-value alternative to expensive factory Glock® magazines, the KCI® 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols is perfect for tactical drills or long days at the range. kcius. The level of quality and durability they possess for the price point, is unbeatable, IMO. A high-quality replacement magazine for Glock pistols and PCCs, these "DROP FREE" magazines have a HARDENED STEEL INSERT which is encased in a high tech polymer. Too fat. The polymer coating protects the magazine and prevents deformation, even when dropped. The 33RD Glock Magazine extension is the ultimate in high-capacity factory Glock gear. KCI USA Glock 17/26/19 9mm Luger 33 Round Extended Pistol Magazine (1) List: $40. KCI’s 33-round 9mm magazine lets you boost the firepower of your Glock® 17 / 19 / 26 pistol. These are the next best magazines to factory Glock, and function reliably in Glock 17, Glock 19, and Glock 26 pistols. 40 S&W, . 99 23. 17 and 15 round mags. A 3 pack of springs is about $20 which brings the price of the KCI mags ($10) close to the sale price of $22 for factory magazines when you factor in a nearly $7 spring. KCI US manufactures aftermarket magazines for many different platforms. It’s completely impractical and a little expensive, but having 50 rounds of 9mm on tap is These 9mm Glock magazines from KCI USA are compatible with Glock 17, 17L, 18, 19, 19X, 26, 34, and 45 pistols. Glock 9mm magazines are duty-tested and trusted by law enforcement and military professionals from all around the globe. 99 6 models Tyrant CNC Glock Magazine Base Plate (1) List: $32. Description (2) KCI USA magazine, 9mm, 33 round, #KCI-MZ008 https://www. I have no experience with the FAB KPOS stock since it would require registration as a short-barreled rifle at the federal level in the United States (a good bit of work Dec 10, 2021 · KCI Glock 17, 19, 26, 34 9mm 33-Round Polymer Magazine. This magazine is designed to be compatible with GLOCK 17 models chambered in the popular 9mm Luger cartridge holding 33 rounds of ammunition. Key Features. Apr 2, 2024 · KCI 17-Round 9mm Magazine for GLOCK pistols. KCI has manufactured these mags with the same rugged design that Glock uses, to provide the Providing a high-value alternative to expensive factory Glock® magazines, the KCI® 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols is perfect for tactical drills or long days at the range. This KCI magazine features a high-tech polymer shell, protecting this magazine from drops, scrapes, and other deformations, with a steel skeleton. Jan 31, 2022 · KCI magazines for the G18 hold the full capacity 33 Rounds. This a KCI replacement magazine for the Glock 9mm Firearms Will fit models:G17, G19, G26, G34. Hey sit in a bin with my glock ones and when I need one I just grab from the bin and get whatever carry or range. 56 100 Round May 14, 2019 · This is a follow up video to a piece I made a few months ago on the 33 round magazine. Glock 19 Magazine 9mm 10rds – Made by KCI $ 35. Fits GLOCK® 17,19, 26, 34 The KCI USA 9mm Gen2 Magazine 10/33 is a high-quality 10 round capacity magazine that is designed to fit all Glock® 9mm pistols. The KCI Glock 17, 19, 26 33 round magazine provides a high-value alternative to expensive factory Glock magazines, KCI Glock magazines are perfect for rough use, tactical drills, and any other application that might put aggressive wear on magazines and equipment. KCI USA Glock 9mm 33 Round Magazine Old price: $27. 56mm 100-Round Gen 2 Drum Magazine Oct 14, 2022 · GLOCK G17/G18/G19/G26 33-round 9mm Pistol Magazine Description: This is an OEM factory new/original drop-free 33-round 9mm magazine that fits Glock models 17 18 19 and 26. All KCI magazines come with a manufacturer direct LIFETIME WARRANTY!!! PLEASE NOTE:Certain U. 99 for a pair of bases of +2 design that won't pop off magazine bodies when rapped on a leg to seat the rounds. Capacity: 33. They do work well in my G19, but my Aero Precision doesn't. This polymer coating protects the magazine and prevents deformation, even when dropped from a great height. The polymer and steel construction ensures durability, reliability, and that the magazine drops free when empty every time. KCI 33 Round Magazine for Glock 9mm Pistols. Providing a high-value alternative to expensive factory Glock® magazines, the KCI® 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols is perfect for tactical drills or long days at the range. So I bought 2 more off a site on the web. 40 magazines, they used the same 17-coil spring from the 9mm 33-round magazines. For use with Glock G17/G18/G19/G26/G34 pistols; 9mm; 33-round capacity; Order today! These are made by KCI and are a quality replacement magazine for a Glock 9mm. Sep 19, 2024 · Choose from your standard 15- and 17-round mags for 9mm, as well as a 33-rounder. The KCI USA magazine is a standard aftermarket magazine. I had bought 4 of the KCI 33 round mags because they were on sale and cheap. 99 Save $3. They worked so well that I got 6 more. The 9mm 50 Round Drum (Mag) is very easy loading using the side ratchet system to make it painless to put all 50 rounds in without any tension. I bought these for my PCC build but it doesn't seem to like them. The polymer coating protects the gun magazine and prevents deformation, even when dropped from great heights. Jeremy took along both 17-round flush-fit and 33-round extended magazines. $27. So obviously KCI should've used a heavier spring for the . 99 per Glock factory . Price: $29. S. The magazine is made from high quality impact resistant polymer and features a black finish. 99 Add to Cart for Price. Glock magazines have a hardened steel insert encased in high tech polymer. This high quality double stack magazine from KCI holds 33 rounds of 9mm ammunition. Maximize your Glock’s firepower with KCI USA’s high-capacity 33-round magazine. 99) SKU: 201091000000 UPC: 201091020109. 223/5. Compatible with Glock models 17, 18, 19, 26 and Glock magazine compatible firearms. In this video we look at the BEST BUDGET GLOCK MAGAZINES KCI VS GLOCK 15 AND 30 ROU I'm not saying you have to do that for them to work. Dec 27, 2024 · The KCI 9MM Glock 33-Round Magazine Gen 2 closely resembles the OEM Glock magazines in appearance, especially in terms of the magazine's steel body and polymer base. 00 The filter has been applied Apr 11, 2011 · Lets see 12. Dec 4, 2024 · I've got 5 - 33 round KCI brand Glock compatible 9mm magazines. Well it worked real well with several projectile weights. KCI Korean manufacture. Designed to fit your Glock chambered in 9mm, this KCI Replacement Magazine provides reliable, smooth-feeding action for your favorite pistol. so I bought one of their 27 round mags to test out. One of their cooler and more interesting options is the 50 round drum. Magpul PMAG 21 GL9 9mm 21 Round Magazine for Glock Pistols $ 17. Lately I've tried a few 13 round G23 size magazines and they are fine. I put them all in the trash. This also fits similar Glock pistols, such the Glock 34, 45, and 47. Jun 18, 2024 · This is the KCI 9mm 15-round magazine for Glock 19 pistols. I'm also not saying that you should buy Korean mags with the intention of replacing the springs and followers. This mag is also the ideal tube for any 9mm AR-15 carbine that uses Glock® mags. Item Number: GL-0004 / View More Items by KCI / Condition: NEW $14. More Information; Manufacturer: KCI: Model: 17. magazine spring X 3,2. Glock 17 33 round high capacity magazine from SGM Tactical. These KCI USA's Glock pattern magazines are constructed with a hardened steel insert that are encased in polymer. For use in Glock patterned pistols. The angled mag had no issues I just want to post this to worn others that the KCI mags still have issues. 00 (Save 30%) $27. Numbered witness holes allow for quick, visual round counts, while the flush-fit design maximizes concealment and ensures a smooth, snag-free draw. Introducing the new Strike X KCI Magazine for double stacked 9mm Glocks®. 40 S&W 13-Round Magazine for Glock 23 pistols features a durable, high-impact polymer body with a hardened steel lining for lasting performance. The magazine has its own reputation for being rugged and reliable. A favorite among budget-minded tactical and personal defense shooters across the country, the KCI® 9mm 17-Round Magazine for Glock® 17 Pistols is an affordable aftermarket pistol magazine featuring a durable, high-impact polymer body with a hardened steel lining for lasting performance and factory-like field performance you can depend on. 99 Be the first to review this product. $14. 00 X-Grip Gen 5 9mm, . Glock 17 Magazine 9mm 33/10 – Made by KCI $ 45. 40 S&W magazine for Glocks, too. They are actually 31-rd. Fits doublestack Glock 9mm pistols (17, 19, 19X, 26, 34, 45, 47; Gen 3 – 5). This affordable Replacement GLOCK® 9mm magazine, 33 round. Featuring all-black, glass-filled polymer construction with hardened steel inserts, the 50-round Glock [Magazine] KCI Glock 9mm 50-Round Drum Magazine $61. Apr 18, 2021 · Try the magazines using the same ammo in a Glock 17, and see if they run. If they don’t, I’d be surprised. 4 Magazine description incorrect. Condition: 3 - Good The KCI USA magazine is a standard aftermarket magazine. All KCI magazines come with a manufacturer direct LIFETIME WARRANTY!!! Sep 16, 2022 · Kci 33 round 9mm mag. All KCI magazines come with a manufacturer direct LIFETIME WARRANTY!!! Specifications: Material: Glass Filled Polymer with a steel liner and feed lips Jan 10, 2024 · If, like me, your budget is limited, KCI mags have proven to be an excellent value for the dollar in my experience. KCI 9mm 33 Round Extended Magazine for Glock 17, 19 Pistols $ 24. KCI produces a wide range of replacement magazines for some of the most popular pistols, and rifles. Stock up and extend your range time today for the best price online from GrabAGun! This is the KCI 9mm 33-round extended magazine for Glock 17, 19, and 26 pistols. 00 per Glock factory 33 rd. 223 / 5. Finish: Black. KCI AR-15 . 40 version, and there are no springs designed for 9/40 Glock magazines which I believe would be strong enough. Shop By Price Price range: $0. Manufactured from quality black polymer and steel, this 5 pack of OEM magazines is for the Glock 9mm pistol platforms including the Glock G17, G19, G26, and G34. KCI is a korean arms magazine manufacturing company. The KCI Glock Compatible Magazine will hold up to 33 rounds of 9mm in a polymer body. Temporarily Out of Stock Includes KCI USA Glock 17/19/34/26 33 Round 9mm Magazine. Mar 19, 2020 · I am considering cancelling my 100 magazine order (1K) of KCI magazines and getting rid of the KCI magazines due to the springs and how they perform after years of being loaded. KCI could be in there with SGM simply because I’ve never had an issue with their drums SO FAR aside from a 9mm drum I ordered that didn’t work in the AR-9s (it had a weird angle to the magazine and I was told there were two different kinds, one which is straighter and not angled but IIRC both were made by KCI. This magazine is compatible with most 9mm Glock handguns. A high-quality magazine for Glock pistols and PCC's, these magazines have a HARDENED STEEL INSERT which is encased in a high tech polymer. Manufacturer: KCI Jun 2, 2022 · This is a 10/33 magazine purchased from Robles Tactical, meaning it's limited to 10 round capacity, the best part of living in California is complying with t <p>More + More equals MORE with the OEM Factory 33-Round Extended Glock Magazine, compatible with all double-stack 9mm models, including G17, 19, 19x, 26, and 34 - Gen 3 and Gen4. 62x39 40 Round Magazine $ 14. 9 CPR + Flat Rate Shipping | Glock 26 Barrels from $32. This polymer coating protects the magazine & prevents deformation, even when dropped from a great KCI USA Glock 33-Round Magazine: Extended 9mm Capacity. I have a bunch of 17 round and a few 33 round Glock clone mags which sport their logo, too. Out of stock. Durable, high-capacity Glock platform magazines for the tactically Elite! The KCI USA magazine fits Glock 17, 18, 19, 19x, 26 and 45 in Gen 1 through Gen 5. Holding 33 rounds, it provides plenty of capacity to minimize reloads, whether at the range or for home defense. Just as reliable just as strong. Numbered witness holes offer quick, visual round counts, while the body is precisely engineered to ensure a snug fit for added reliability. KCI 33 Round 9mm Magazine for GLOCK pistols. Posted by Stephen Jasper on 25th May 2023 Website says magazines are 33-rd. It's a 1-time expense and you're good to go. SKU: KCI-MZ008. Made from high-quality polymer, this magazine is built to last and handle heavy use. Add to Cart. These KCI USA 's Glock pattern magazines are constructed with a hardened steel insert that are encased in polymer. Featuring a durable hardened steel insert encased in protective polymer, this extended magazine offers a significant capacity increase without compromising reliability. Description: Glock 9mm 33 Round Black Magazine, 5-Pack. I had just converted my Glock 20 lower with a Glock 21 upper. Having said that, their version of the Glock 33 rounder is a mixed bag. The KCI® 9mm 6-Round Magazine for Glock® 43 pistols is an affordable aftermarket magazine, featuring a polymer body with a hardened steel lining for lasting performance and superior durability. I had previously had really positive experiences with AT products, including their very nice MP5 mags. com/products/glock/9mm-33rd-gen-2-magazine (1) KCI USA magazine, 9mm, 15 round, #KCI-MZ009 Shop Kci Usa Inc Magazine Glock 19 Gen 2 9mm 10 Round Black Poly | 20% Off Be The First To Review Kci Usa Inc Magazine Glock 19 Gen 2 9mm 10 Round Black Poly + Free Shipping over $49. jurisdictions restrict firearm magazines KCI 9mm 50-Round Drum Magazine for GLOCK pistols. KCI 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols - KCI-MZ008 - $14. You wont believe that cost savings here. 40 is a little different. 40 #. KCI 33-ROUND 9MM MAGAZINE FOR GLOCK G17/G18/G19/G26 DESCRIPTION: KCI quality pistol magazines are constructed with a hardened steel insert encased in high tech polymer. 99 (shipping varies) The 50 round drum mag, 33, 26, and 19 ones all work fine surprisingly An affordable alternative to expensive OEM magazines, the KCI 9mm 10-Round Gen 2 Magazine for Glock® 17 Pistols features a steel-lined polymer body for unparalleled strength and crush resistance. <br To do that, you need this 33 round magazine for the Glock 17 by KCI. 00 - $28. 99 $ 59. Compatible with Glock 17/17L/19/19x/26/34/45/47. The G22 size mags wouldn't drop free. 8. Feb 15, 2012 · When Glock made their 22-round . The polymer molding helps to protect the magazine body from damage and deformation from regular use. Glock Magazine Springs G18 31 and 33 Round Magazines $7. Fit and function in PCC's is not guaranteed. 99. These quality replacement Glock pattern magazines are constructed with a hardened steel insert encased in high tech polymer. I just received two KCI 33-round mags last week from GunMagWarehouse. 45ACP 26RD MAGAZINE Our goal is to always provide an exceptional level of products, and we aim for lasting partnerships with our clients and to bring the best magazines in the country. Nevertheless, it delivers great value with its rugged steel insert, crack-resistant protective polymer overlay, and heat-treated chrome silicon wire internal spring which will retain KCI Drum Magazine50 Round polymer Drum Magazine for Glock Models 17, 18, 19, and 26 by KCI. 99+shipping, reg price $129. [Magazine] KCI Glock 17, 19, 26, 34 9mm 33-Round Extended Magazine $13. Caliber/Gauge: 9mm Para / 9x19. KCI USA makes a 40-round . Since making that video I was contacted by a rep from KCI and they sen The KCI® 9mm 33-Round Magazine for Glock® 17 Pistols is a top choice for budget-conscious tactical shooters and personal defense enthusiasts. He loves them. 45. Like all the others, the KCI Glock 17 magazines are clones of genuine polymer Glock magazines. For the best experience on our site, be sure to turn on Javascript in your browser. Add to Wish List Add to . 3 of them are brand new and the other 2 have only had 3 or 4 rounds fired out of them, so as-new. 45 mags at a gun show. Maybe the first I bought years ago were an anomaly. Temporarily Out of Stock Includes This is a Glock 17, 19, 26, and 34 9mm 33-round extended magazine from KCI. Jan 18, 2023 · Glock mags didn’t just get popular because of the handgun. Kel-Tec CP33 KCI USA's magazine is designed to be compatible with Glock 17 models chambered in the popular 9mm Luger cartridge holding 33 rounds of ammunition. 5 My nefew says these are the best. 357 SIG Magazine Grip Adapter for Glock 26, 27, 33 Pistols These KCI USA's Glock pattern magazines are constructed with a hardened steel insert that is encased in a polymer. You'll get a decent life out of the kci springs and they are reliable enough for the range. The KCI USA 45 ACP Gen2 Magazine 10/26 is a high-quality 10 round capacity magazine that is designed to fit all Glock® 45 ACP pistols. 99 $26. KCI 9mm Gen 2 Glock-Compatible 17/19/26/34/45/47 33-Round Extended Magazine KCI-MZ008 JavaScript seems to be disabled in your browser. Price: $18. Even firearms instructors that shoot all day have a plethora of glock magazines with unbelievable round counts. Glock 18 with a drum mag going full auto. Nov 23, 2020 · I have some in 9mm that work fine. . May 27, 2021 · KCI quality drum magazines for GLOCK 9mm firearms are molded from composite/glass-filled polymer, ensuring reliable feeding and extreme durability. KCI 33-ROUND 9MM MAGAZINE FOR GLOCK G17/G18/G19/G26 DESCRIPTION: KCI quality pistol magazines are constructed with a hardened steel insert encased in high tech Dec 28, 2024 · This is a factory Glock 9mm 33 round magazine. Providing a high-value alternative to expensive factory Glock magazines, KCI magazines are perfect for rough use, tactical drills, and any other application that might put aggressive wear on magazines and equipment. Rating: 100% (2) Regular Price $25. 99 Up to 15% Coupon Glock Parts is the largest provider of custom parts and Glock accessories. 99 Special Price $18. The steel feed lips ensure reliable and easy feeding, with the polymer follower and steel spring contributing to… Dec 30, 2016 · Well about 4 months ago I saw one of the 27 round . Vendor: MSR. 99 I can't speak to this exact mag, but my AR9 totally ate a 33 round KCI stick This is a collaboration between KCI USA and Strike Industries. Add to Cart to See Price. SALE KRISS VECTOR 10mm 33 Round Magazine $ 69. High Capacity: Holds 33 rounds, giving you more shots before needing to reload. 99 The KCI® . A favorite among budget-minded tactical and personal defense shooters across the country, the KCI® 9mm 33-Round Magazine for Glock® double stacked 9mm Pistols is an affordable aftermarket pistol magazine featuring a durable, high-impact polymer body with Dec 23, 2013 · I tried 2 kci 40 caliber mags and they sucked I tossed them. Work with the model 17, 19, 26, 34 or other 9mm Glocks. It has a reinforced steel feed lips, which prevents the magazine from failure and ensures that you have a smooth and consistent feeding cycle. Providing a high-value alternative to expensive factory Glock magazines, KCI Glock magazines are perfect for rough use, tactical drills, and any other application that might put aggressive wear on magazines and equipment. Posted by Kent Utke on 27th Oct 2024 Works great. 8 followers X 3 and 13. A high-quality replacement magazine for Glock pistols and Glock Style PCCs, these "DROP FREE" magazines have a HARDENED STEEL INSERT which is encased in a high tech polymer. Shop KCI USA Glock 43 9mm 6 Round Pistol Magazine | 33% Off Be The First To Review KCI USA Glock 43 9mm 6 Round Pistol Magazine + Free Shipping over $49. 10/33 Korean KCI Glock 9mm mag. Style may vary slightly. 40 50rd drum magazine . Selling for $90 for all, that's $18 per mag. SKU: KCI-136 Glock 44 Magazine 22LR 10-Round $ 44. You'll end up paying almost what a oem glock mag would cost. You can send plenty of practice rounds downrange without having to reload. Glock Gen 3 Glock 33 . So, even if it costs you $25 for a magazine, you're buying a product for life. one mag had several failures then 2 others literally fell apart while in use. A Magblock 10 round limiter has been inserted and a rivet has been installed into the floorplate. It won’t work with your single stacks, obviously. 9mm 33 Round Magazine 2 Pack- For Glock Pistols These drop-free magazines are fully metal lined and will work in your 9mm Glock handgun. Quick view. Because of the weight of the loaded magazine, they are NOT drop free. Condition: 3 - Good There's still people in the community running Gen 1 glock magazines from the 1980's. 99 for the 31 round magazines, that wouldn't feed as they came from the factory. It is compatible with the Glock 17, 19, 26, and 34 Glock models. The Glock 19 uses 15-round mags, the model 17 takes 17-round mags, and the Glock 33 round mags? Well, those work great Oct 23, 2020 · This is the KCI 9mm 17-round magazine for Glock 17 pistols. Oct 2, 2023 · The 30-round MP5 magazine has the same coating and similar stamped steel construction. KCI USA's magazine is designed to be compatible with Glock 17 models chambered in the popular 9mm Luger cartridge holding 33 rounds of ammunition. See Reviews. KCI Glock 17 9MM 33 Round Magazine. KCI Gen 2 9mm 33 Round Glock Magazine, Black - KCI-MZ008 . They still work as poorly as shown in a video I watched on Youtube dated back to 2017 so in my opinion the KCI mags I received are no better than those from 5 years ago. May 23, 2011 · I have three of the original factory Glock 33 round magazines, but when I saw these KCI / Amercian Tactical mags at the gunshow for 15 bucks, I decided to try one out. I have 30 KCI mags for g17/19 and they have been great. Ill stick with Glock and magpul mags absolutely no issues with either of those. I bought some 15 round G22 size mags after I bought my first set of 17 round G17 mags. This also fits other 9mm doublestack pistols (G19X, 45, 47). Factory-drilled, numbered witness holes offer quick, at-a-glance round counts, while precise tolerances ensure a snug, reliable fit. The KCI Glock 17, 19, 26, 34 9mm 33-round polymer magazine is designed for use with the Glock Gen 3 or later. Jul 21, 2022 · This is a KCI® 9mm 33-round extended magazine for Glock® 17, 19, 26 and 34 pistols. Each magazine can hold 33 rounds of 9mm ammunition, providing plenty of extra time between reloads. It is an aftermarket magazine , so you can expect some variance in quality and fit compared to the original Glock magazines. 357 Sig 11-Round with Finger Rest Factory Magazine $29. EXTENDED GLOCK MAGAZINE 9MM 33 ROUND KCI MAG KCI. The tenth round is a bit of a tight squeeze, but will fit, better to be on the safe side. 95. 95 ar15discounts upvotes · comments KCI 9mm 33-Round Extended Magazine for Glock 17, 19, 26, 34 Pistols. KCI AK-47 7. Condition: New Availability: In Stock Items Usually Ship Within Feb 13, 2022 · If you can get it, I would pay more and buy the Glock magazine instead of the KCI magazine. These quality replacement magazines are constructed with a hardened steel insert encased in high-tech polymer. On The Range KCI USA's magazine is designed to be compatible with Glock 17,19,19X,26,34,45,47 models chambered in the popular 9mm Luger cartridge holding 33 rounds of ammunition. The South Korean magazines do not have as good a reputation as the Glock magazines. Or the Glock 18 if you are one of those lucky people than can legally possess one. It has undergone every kind of torture test mankind can dream up and continues to spit out bullets. Jun 9, 2022 · A favorite among budget-minded tactical and personal defense shooters across the country, the KCI® 9mm 17-Round Polymer Magazine for Glock® 17 Pistols 10-Pack is a budget-friendly aftermarket magazine 10-pack, favored by volume target shooters and civilian tactical shooters across the country. Features: The KCI GLOCK 9mm 33-round black extended magazine is designed for those who need extra firepower and reliability. This Glock 9mm 33 round extended magazine is designed for use with Glocks Gen 3 or later and compatible with all Gen 4 9mm double-stack Glocks. KCI Glock magazines have a hardened steel insert which is encased in a high tech polymer (which is fully metal lined). qqx tliun amsbmkr qljclu drxkm aoytwe dlfcu rbr naul avujo