CMMG Radially Delayed Blowback (RDB) Info (initially marketed as the ‘Guard’)
Lowest cost CMMG RDB FE (Fixed Ejector) Banshee upper – under $700
My 9mm CMMG RDB history of tinkering and current status
ARS – Amphibian Recoil System and ARS-EX Amphibian Recoil System Extended
CMMG RDB Barrels (also for bolt action builds)
Full Auto CMMG RDB Fixed Ejector Project (hybrid CMMG Dissent) – 2023 through 2025
My previous 9mm CMMG RDB Setup – 2017 through 2022 (CMMG Guard / Banshee)
9mm and .40SW CMMG RDB Ejector Spring info / issues
MEAN Arms Endomags / Exomags for the CMMG RDB and Loader Info
Mods for 9mm CMMG RDB to work with UN-modified Colt mags
9mm CMMG RDB Buffer / Spring Testing and tuning OLD REFERENCE DATA – 2017
CMMG RDB + Un-modified Scorpion mags
9mm Bolt Action AR upper build
‘DI – Direct Impingement’ is not a correct description of the AR15/M16 operation – See from the man himself: https://www.youtube.com/watch?v=kaIU0nCxwGg&t=3265s
Also read Stoner’s patent where he states it is a ‘stationary piston’: https://patents.google.com/patent/US2951424A/en
Maximizing BCG Stroke Length – M16 ‘Ultimax’
Teal Blue Bravo’s PDQ Ambi bolt Release on MGI Magwell
RMW Extreme .45ACP Gas Operated Upper with MGI .45 GG Magwell
Leitner-Wise HD buffer retainer – my use case
Old 9mm M16 info – around 2005