Dec 25, 2011 · Finally got my 9.5" MK109 PWS 300 blk upper It is super light and the rails are very smooth, this upper is the nicest I have owned I have it installed on a new SBR'd lower which has a standard carbine buffer. I also used a YHM Phantom .308 can.

Aug 26, 2012 · My MK109 cycles subs and supers suppressed no problem. It also cycles supers unsuppressed just fine, but obviously doesn't have enough pressure to cycle subs without a can. LWRC and PWS have very different piston setups. The PWS is a simple one piece op rod with a free floating piston head attached to the bolt carrier.

Jul 25, 2015 · I already have a Barrett Rec7 Gen II 6.8 to reach out to the 150 - 500 yd distances. I'll be adding a Barrett 98B Tactical 300 WinMag next in October in order to reach out and "touch someone" at ultra-long ranges beyond 500. The PWS will rarely see supersonic rounds, either. $$ are not the issue.

Jun 16, 2012 · 300BLK piston guns from PWS. Post by USBP379 » Sun ... PWS MK109 SBR. Pictures courtesy of Red's Trading ...

Oct 10, 2024 · I have the PWS MK109 300blackout on a PWS pistol receiver and I took it to the range this Friday. I had the same problem with the exactly the same ammo, Remington 300 BLKOUT 7.62x35mm 115 gr Close Tip Flat Base. I tried 3 different mags, Pmag, Victory and GI, and it had the same problem.

Oct 10, 2013 · I need some help selecting a proper load for my PWS MK109 300 Blackout upper, no can (yet) and has a KX3 currently hanging out front (it came with the used upper, I believe someone was trying to up the back pressure to get proper function) hopefully someone has Quick Load or another program and can plug right in and find some answers

PWS MK109. Moderators: gds, bakerjw, renegade. 1 post » Page 1 of 1. Lt Dan Member Posts: 37 Joined: Wed ...

Jul 16, 2016 · PWS MK109 300 Blackout Upper, MOD 1. 9.75", 1/8 twist barrel Long stroke gas piston upper. Less than 300 rounds. Excellent condition. $995 plus shipping Firm Insurance extra Trade for Lightweight 1911 Officer, compact, or CCO pistol

Jun 1, 2012 · Noveske 8" or AAC 9" or PWS 9.75" upper? Post by Taseal » Fri Jun 01, 2012 5:57 am I was thinking about buying a FN 5.7, but I think I rather spend the money and get myself a SBR upper, and submit my SBR paperwork right now... in the meantime I will use the SBR upper on my pistol lower.

Nov 5, 2016 · 9" PWS Mk109 SBR (piston-driven), IMR4227, CCI 400, once-fired converted 5.56 brass from GCG, COAL 2.18 ...