JK Armament HUB Piston Mount Features The JK Armament HUB Piston Mount is engineered to keep short recoil-operated semi-automatic pistols cycling reliably once a suppressor is attached. By isolating the suppressor mass from the reciprocating barrel it prevents the added weight of the can from interfering with slide velocity and lockup timing. This makes it compatible with GLOCKs SIGs and nearly every other modern centerfire pistol platform on the market today. The mount threads directly into the base of the serialized suppressor tube using the HUB-standard 1-3/8x24 thread pitch replacing the factory taper mount or other mount accessory. Built from a combination of aluminum and stainless steel with a durable nitride finish this piston mount is designed to handle the repeated cycling stress of duty and range use. Its 1.55 inch diameter and compact 4.5 ounce weight keep the added bulk to a minimum while preserving the HUB system s broad compatibility across other HUB-threaded suppressors with roughly 1.8 inches of internal length for the booster housing. Because it drops into place of an existing mount shooters can convert a taper-mounted can to piston operation without buying an entirely new suppressor. This makes the JK Armament HUB Piston Mount a practical upgrade for anyone running a .45 Caliber host pistol suppressed. JK Armament HUB Piston Mount Specifications Manufacturer: JK Armament Model: HUB Piston Mount Caliber: .45 Caliber Color: Black Material: Aluminum / Stainless Steel Finish: Nitride Diameter: 1.55 Thread Pattern: .578x28 Weight: 4.50 oz Available At: GrabAGun