MODIFY Accurate Hop Up Chamber M4 Sub-Machinegun and its free floating design

and its free floating design adds additional accuracy by ensuring that no part of the rail touches the barrel itself

02mm Barrel for Systema PTW CQB-R

Pouch Rolls Up and is Held Closed with 1 1/2" x 2 1/2" Velcro Tab

Knights Armament Stoner Rifle SR-16 URX CQB

MODIFY Accurate Hop Up Chamber M4 Sub-Machinegun and its free floating designDescription: MODIFY Accurate Hop Up Chamber M4 One Piece Precision Hop Up Unit Built for Speed and Accuracy Designed for highly precise hopup tuning Redesigned pressure plate by adding an adjustment gear allowing for easier, more accurate adjustment Includes Chamber Parts (Bucking not Included