Bolt Carrier Guide Bushing, V2, Fusion Engine Poppet Valves It’s not rocket science

It’s not rocket science

• Quarter-turned to avoid crease down the middle

M5 Buffer tube screw 1x #23 HSS Drill Bit Grip screw pilot holes 1x Compression Spring Pusher piece — keeps engine seated forward 2x Bullet Valve Lead

With the Red Low Flow poppet installed along with one of these higher flow nozzles

• Head circumference - 21 5/8" to 23 5/8" (54

Bolt Carrier Guide Bushing, V2, Fusion Engine Poppet Valves It’s not rocket scienceThe V2 Fusion Engine will come with Bolt Carrier Guide Bushing attached to the top of the front cylinder section. It is mainly used to prevent the mock bolt carrier from impacting the hop up adjustment wheel on certain models of M4's. This is an OEM replacement in the event yours gets taken by the workbench gremlins. The 8 32 screw which secures the bushing to the cylinder comes as part of the Fusion Engine Screw Set.