Angry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (BC* Style/ Dark Earth) Part-Type_Inner Barrel G&P Daniel Defense MK18 M4A1

G&P Daniel Defense MK18 M4A1 RIS II Rail (Licensed By Madbull

Adjustable screws to fine tune your preferred braking point

and PSD (Personal Security Detail) but it's also in the Sub compact weapon category that Colt is also working on according to the Firearms Blog

G&G 600 rds 74 Type Magazine for RK Series

Angry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (BC* Style/ Dark Earth) Part-Type_Inner Barrel G&P Daniel Defense MK18 M4A1Angry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (BC* Style Dark Earth) High Speed Bolt Carrier (High Quality and Light Weight) Come With MPA Nozzle set Suitable for Tokyo Marui M4 MWS Series Airsoft Gs Blow Back GBB Rifle