Hop Up Barrel Slot Bushing set Fittings It also allows you to

It also allows you to run a higher pressure to maintain reliable feeding with the standard heavy spring and heavy BB's without going over the velocity limit

While these may not be the greatest if your playing style embraces the "accuracy through volume" concept

The V2 Fusion Engine will come with Bolt Carrier Guide Bushing attached to the top of the front cylinder section

they can also be threaded into a conventional regulator to make an extremely compact air rig

Hop Up Barrel Slot Bushing set Fittings It also allows you toHop Up Thing Barrel Slot Bushings Stop the wiggle. Lock the hop up in place. Most stock hop up units have loose fitment in the outer barrel, leaving room for the hop up to rotate or shift vertically. Rotation sends BBs left or right. Vertical movement throws off loading consistency and nozzle alignment. Either way, your accuracy pays the price. Barrel slot bushings eliminate that play entirely. They fill the gap between the barrel slots and the Hop Up