Dye UL-S Back Autococker - Black Polished .680" Mechanical Markers Comes with a full shim

Comes with a full shim kit to totally remove any side to side play

or can easily be swapped to the rear if you want to swap the stock and create a different style of MP5 for yourself later

The Phaze-5 Fitting allows more air to get to the cyclone feed and actuate the paddles more consistently

light Hyper3™ In-Line air regulator provides high flow and smooth velocity adjustment

Dye UL-S Back Autococker - Black Polished .680" Mechanical Markers Comes with a full shimDYEs new UL S Barrel Back gives you more control and more accuracy with an extended 7 inch control bore. The UL S control back uses multi stage precision honing, the most accurate and consistent finish available in paintball, eliminating ball spin, and improving accuracy. Self aligning two piece construction ensures properly centered assembly between control bore and steady port tip. . 7 grams lighter than the standard Ultralite Barrel Back. Be more