G&P WOC M4A1 (Steel Barrel) GBB Rifle SMG Hop-Up Adjusting Tool

Hop-Up Adjusting Tool

ACP Metal Blowback Housing for ACP601 GBB Pistol

Clockwise 14mm is able to attach any barrel extension tube (silencer)

etc are all installed  1

- Color: A-tacs

G&P WOC M4A1 (Steel Barrel) GBB Rifle SMG Hop-Up Adjusting ToolNEW RELEASE! G&P Full Metal Custom M4 Series based on WA M4 Gas Blow Back Rifle WA internal parts with all possible METAL upgrade from G&P such as Hop up chamber set Crispy Metal Sounds & Smoother slide cycling Upgrade Include: WA M4A1 Metal Body (WP01) WA M4 Handguard Kit (Short) (WP12) WA M4 Commando Steel Outer Barrel (WP18) WA M4A1 Spare Magazine (50rds) WA M16A2 Grip (Black) (WP44B) WA M4A1 6 Position Sliding Buttstock (Black) (WP61B) WA Hammer