PANZER AR57 ULT UPPER ASSEMBLY 5.7X28MM 12" - AR57ULT-12
Jul 29, 2023 · AR57 12" Complete ULT M-LOK Upper, AR57 Mfg, Factory new. Comes with a 12" lightweight barrel with M-LOK rails. This AR57 Upper Receiver Assembly converts any AR-15 lower …
PSA/Panzer AR57 ULT Uppers > Palmetto State Armory > AR15.COM
Jul 11, 2022 · My observations: Fit/finish comparable to the original AR57 production. Bolt profile is different, so swapping bolts between original and panzer uppers is a no go (here’s looking at you …
AR57 Full Auto Bolt Modification - AR15.COM
Jan 6, 2026 · The big difference from an FRT such as "super safety" is that an auto sear adds an essential OOB interlock, which AR57 lacks. And, to make matters worse, an OOB on AR57 tends to …
PANZER AR57 ULT UPPER ASSEMBLY 5.7X28MM 16"
Nov 14, 2022 · AR57 16" Complete ULT M-LOK Upper, AR57 Mfg, Factory new. Comes with a 16" lightweight barrel with M-LOK rails. This AR57 Upper Receiver Assembly converts any AR-15 lower …
What happened to the AR57? > Rimfire and Pistol Calibers > AR15.COM
Apr 30, 2017 · Is it still around, I found a webpage for it, but it doesnt seem to have the PDW length upper available anymore, I also heard that the company might be going under, is this true? Anyway, …
Brief review of my new AR57 upper - AR15.COM
Jun 3, 2011 · I used my existing SBR lower, but I think I may register a separate lower for this upper. For those of you that have no idea what I am talking about, the AR57 upper is a monolithic railed upper …
AR57 Upper 5.7X28mm problems shooting > AR Variants > AR15.COM
Apr 25, 2010 · I have the carbine AR57 buffer with my 6 point adj stock. I got the right buffer and buffer tube and all. I know I have the standard RRA trigger with hammer and spring. According to …
New AR57 Build magazine > AR Pistols > AR15.COM
Jan 12, 2024 · UPDATE.. i tried the CMMG mags on a couple of my other ARs and the mags locked in perfectly on all of them but then I tried my other AR mags on the AR57 and they did the same thing …
5.7 upper question > Build It Yourself > AR15.COM
Oct 14, 2024 · I had an AR57 upper and it used a special extra heavy buffer with a standard carbine buffer spring. I would not try to shoot a 5.7 upper with any buffer lighter than what it is designed for.
BHI AR FifTEEN AR57 lower Kent, Wa. - AR15.COM
Apr 26, 2014 · It seems that many AR15.com members bought AR57 BFI lowers that are way off specs. I read about each problem and then proceeded to start measuring mine and installing mil-spec parts.