RetroArms M4 - AR15 CNC Aluminum Pro Rotary Hop Up Chamber by RetroArms Serie G28 DMR762 The HOLO series is equipped

The HOLO series is equipped with a unique quick removal clip for quick hand installation and disassembly

magazines and special box magazines made for M249 replicas

remember to purchase your colour matched magazine covers to complete the look

allowing for highly flexible sling work

9 feet@ 100 yds

RetroArms M4 - AR15 CNC Aluminum Pro Rotary Hop Up Chamber by RetroArms Serie G28 DMR762 The HOLO series is equippedCNC Aluminum Rotary Hop Up Chamber M4 AR15 PRO. This Hop Up chamber is a slightly redesigned version of the RetroArms hop up Basic chamber. It is machined on a precise CNC machine from aviation grade duralumin EN AW 7075 and anodized. This hop up chamber is R hop (Rotary) ready and is meant to be used in setups, which have troubles with magazine installation in the body, which are not unlocking and feeding. The feeding shaft screwed in without any