Custom "F1" Speed Cannon/ Hand-Guard Kit m4a1 V8 This is the GBU custom

This is the GBU custom series guide plug for your 4

To ensure you are getting genuine gears

Mag Prime Cock Back Function

making it versatile and user-friendly

Custom "F1" Speed Cannon/ Hand-Guard Kit m4a1 V8 This is the GBU customThese are the all new F1 series Speed cannon Hand Guard Kits. A 6 piece kit offering you the most dynamic combos and high performance tuning available for your gel blaster. Featuring your choice of both a threaded or direct hop up and a choice between 2 end caps for your ultimate look, this kit is nothing like we've ever seen before and we believe you guys will enjoy this creation as much as we do! Made of 7075 aluminium and a full compatibility