Maple Leaf Precision 2022 AR15/M4 GBB "Hummingbird" Short Stroke Bolt Assembly for GHK Specifications

- Include : Bolt carrier , Muzzle
- 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.