ACW Advanced Bolt with Selector Switch for AAP-01 GBB Pistol Color:Red High quality polymer build and

High quality polymer build and easy to use

3 gearbox w/ 9mm bearings (upgradeable w/ standard TM compatible parts) w/ heavy weight EBB bolt

Optics plate is compatible with standard RMR-footprint red dot sights

Fully adjustable and comfortable to wear all day

The 7mm is the OEM version for most uses and spring types

ACW Advanced Bolt with Selector Switch for AAP-01 GBB Pistol Color:Red High quality polymer build andFeatures Precision CNC 7075 aluminum construction Ultra lightweight ported design Durable construction prevents flexing and warping under hard use Provides stable and smooth blowback cycling Built in selector switch allows you to go from semi to full auto with ease