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The use of the booster assembly allows your semi-auto device to properly cycle when the weight of a solvent cleaning tube is added to the end of your semi-auto device. Most semi-devices with a browning type action will require a booster to properly cycle.
Weight 5.4oz 150g
Booster assembly includes piston and spring
Booster threads are 1.375x24 (1-3/8x24)
Dimensions: 1.5 x 1.5 x 2.15 in
Size. 1/2 x28 9mm Cal or 5/8 x 24
A booster is required for all semi-device that utilize the Browning-type action. The use of the booster allows your semi-auto device to properly cycle when the weight of the solvent cleaning tube is added to the end of your semi-auto device.
Material: Stainless Steel and Aluminum