ACW Advanced Bolt with Selector Switch for AAP-01 GBB Pistol Color:Gold full metal rack piston

full metal rack piston

The rifle's adjustable hop-up system allows players to fine-tune their shots for optimal range and accuracy

and easy to exchange to other colors once installed (removes with a small allen set screw)

Black Finish

also include stock spring(350fps)

ACW Advanced Bolt with Selector Switch for AAP-01 GBB Pistol Color:Gold full metal rack pistonFeatures 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