CMMG Radially Delayed Blowback (RDB) Info (initially marketed as the ‘Guard’)
My CMMG RDB Setup – Updated 4/2020
9mm and .40SW CMMG RDB Ejector Spring info / issues
MEAN Arms Endomags for the CMMG RDB
Mods for 9mm CMMG RDB to work with UN-modified Colt mags
9mm CMMG RDB Buffer / Spring Testing and tuning OLD REFERENCE DATA
Full Auto Cyclic 5.56 Testing of various configurations
Teal Blue Bravo’s PDQ Ambi bolt Release on MGI Magwell
RMW Extreme .45ACP Gas Operated Upper with MGI .45 GG Magwell