Maple Leaf AR15/M4 GBB “Hummingbird” Short Stroke Bolt Assembly for GHK

Include : Bolt carrier , Nozzle ●Feature of product : – Can be directly replaced with the original GHK GBB bolt carrier. – Increase the cyclic rate of fire, up to about 18 rounds per second (it will vary depending on the actual gas pressure and the length of the inner barrel/weight of the BB bomb). – The traditional AR15 can be removed from the support rod structure design, and can be changed into a no support or a folding support design, which increases the convenience of carrying. – After there is no bullet, the bolt can be fixed in the back, which does not affect the original GBB operation habits. – Compatible with old and new GHK M4 GBB.