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AR15 / M16 Info

CMMG Radially Delayed Blowback (RDB) Info (initially marketed as the ‘Guard’)

Ultimate Full Auto CMMG RDB Fixed Ejector Project (hybrid CMMG Dissent)

My previous 9mm CMMG RDB Setup – Updated 12/2021 (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

.40 SW CMMG RDB Setup

 .45 ACP CMMG RDB Setup

CMMG RDB Barrels

CMMG RDB + Fluted chamber?

CMMG RDB + Un-modified Scorpion mags

9mm M16 Options

Angstadt Arms Vanquish barrel modified for RDB system or for a ‘single shot’ build using a 5.45×39 bolt

9mm suppressed – Ported vs Not ported


‘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

Buffer Information

My Take on the A5 System

Maximizing BCG Stroke Length – M16 ‘Ultimax’

Vltor A5 buffer tube vs PSA PA-10 and Carbine tube

7.62x39mm Configurations

5.45x39mm Configurations

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


  22LR M16 Info


Old 9mm M16 info


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