Introducing the new Booster.The use of the booster assembly allows your device to properly cycle when the weight of a solvent trap is added to the end of your device. Most semi-auto device with a browning type action will require a booster to properly cycle.
Booster assembly includes piston Booster threads are 1.1875x24(1-3/16x24) Thread.
Also with 1.375x24 to 1.1875 adapter. For semi-auto device only.
Weight: 0.12 lbs(3.8oz) Dimensions: 2 x 1.35 x 1.35 inch