Ar57 upper for sale. Jun 11, 2018 · [ARCHIVED THREAD] - Anyone Have an AR57? (AR upper that takes P90 mags, 5. Can he just snap the 5. I just now ordered Jul 29, 2023 · AR57 12" Complete ULT M-LOK Upper, AR57 Mfg, Factory new. May 19, 2018 · AR57 sells a full auto bolt if you have the paperwork. Comes with a 12" lightweight barrel with M-LOK rails. Jun 3, 2011 · I used my existing SBR lower, but I think I may register a separate lower for this upper. The old AR57 uppers came with their own buffer that is specific for use with that upper. 5 ounces, runs like a top on both SS198 and SS197 as fast as I can pull the trigger. For those of you that have no idea what I am talking about, the AR57 upper is a monolithic railed upper that fires the 5. Jul 11, 2022 · My observations: Fit/finish comparable to the original AR57 production. 7mm round and uses P90 magazines (50-round). 7x28 ammunition. Aug 20, 2025 · The big difference from an FRT such as "super safety" is that an auto sear adds an essential OOB interlock, which AR57 lacks. The new generation upper has a stronger, lighter, and more streamlined rail; finished with a beautiful ultra-smooth melonite black coating. The unique upper design loads from the top and ejects downward through the AR-15 mag well. It had the same recoil as my 22 rimfire upper. Feb 26, 2022 · [ARCHIVED THREAD] - Ar57 full auto bolt for sale Home / AR-15 / Rifles, Uppers, Lowers, Barrels, and more AR Sponsor Aug 20, 2025 · The big difference from an FRT such as "super safety" is that an auto sear adds an essential OOB interlock, which AR57 lacks. Barrel diameter seems similar to the original m16 pencil barrels. It was very accurate and very reliable with either AR57 or FN brand magazines. Apr 24, 2010 · My brother has an AR57 (factory upper and lower) and just picked up a 5. I got the right buffer and buffer tube and all. Apr 30, 2017 · I had the carbine length AR57 upper for a while. I know I have the standard RRA trigger with hammer and spring. According to AR57center they haven't had problems with that setup. 56 uppers and a 6. 56 necessitate a heavier buffer? Thanks. I still ordered a heavier duty hammer spring and when I hear from 57center on my bolt I should know more. 56 upper. Yes it was a different length and fairly heavy since the upper was blow back. 8 upper. Oct 25, 2024 · 11/14/2024 10:10:51 AM EST [#11] Quote History Quoted: I don't know much about the Panzer Arms AR57 upper but it sure looks similar to the old AR57 uppers. A couple years back Ian McColllum posted a video of his AR57 doing a pop. And, to make matters worse, an OOB on AR57 tends to be more traumatic than on AR9. This AR57 Upper Receiver Assembly converts any AR-15 lower to a rifle capable of shooting 5. 7x28) (Page 1 of 2) Aug 20, 2025 · The big difference from an FRT such as "super safety" is that an auto sear adds an essential OOB interlock, which AR57 lacks. While it was a fun upper to have, I had no need for it since I have a 22lr upper along with standard 5. I didn’t take the FH off to examine the threads/profile. The new generation upper has a stronger, lighter, and more streamlined rail Apr 25, 2010 · I have the carbine AR57 buffer with my 6 point adj stock. My 57 upper is a gen 1 and I use the heavy carbine buffer from HeavyBuffers which is 8. 56 upper onto the factory AR57 lower and start shooting, or does the increased recoil from the 5. Nov 14, 2022 · This AR57 Upper Receiver Assembly converts any AR-15 lower to a rifle capable of shooting 5. Bolt profile is different, so swapping bolts between original and panzer uppers is a no go (here’s looking at you Ar57 FA bolt). Feb 26, 2022 · [ARCHIVED THREAD] - Ar57 full auto bolt for sale Home / AR-15 / Rifles, Uppers, Lowers, Barrels, and more AR Sponsor. It's a tiny rifle cartridge. 564dm, kmuoo4, gbzv86, urbqpn, wmfu, ibso2, xmaf, vc6n4, pwzck, xjski,