Lapco Autococker Breech Sizers - .678 Elbow & Knee Pads The barrel backs are perfectly

The barrel backs are perfectly bore sized at

Paintball Industry standard 4500 PSI fill capacity with an 800 PSI output pressure

Do not inhale

13ci air system and additional Stock Bars sold separately

precision Airsoft rifle designed around the concepts of modularity

Lapco Autococker Breech Sizers - .678 Elbow & Knee Pads The barrel backs are perfectlyPrevents Barrel Roll Out in closed bolt markers, like Autocockers and Cocker Pumps. The Breech Sizer will center the ball ensuring an even cushion of air around the ball before it enters the control bore of the barrel. This produces optimal accuracy and gas efficiency than with the barrel alone. Product pictured is a . 687 Bore but this product is for a . 678.