Gemtech GM-45, Lunar 45 & Blackside Rear Mount, 1/2x28, Thread Mount The Gemtech rear thread mount (part number 12196) is a threaded end cap adapter for the GM-45, Lunar 45 and Blackside suppressors. It threads into the rear of the suppressor and lets you mount it directly to a fixed barrel with 1/2x28 muzzle threads. Key Features Threaded rear mount (end cap adapter) for Gemtech GM-45, Lunar 45 and Blackside suppressors 1/2x28 thread pitch, marked on the face of the mount Lets you run the suppressor on fixed-barrel firearms Gemtech part number 12196 Specifications Brand: Gemtech Part Number: 12196 Type: Threaded rear mount / end cap adapter Thread Pitch: 1/2x28 Compatible Suppressors: GM-45, Lunar 45, Blackside Weight: 3.2 oz UPC: 609224347214 How to Use Make sure the firearm is unloaded. Check that the barrel's muzzle threads are 1/2x28 and that the barrel is fixed. Thread the mount into the rear of the suppressor, then thread the suppressor onto the barrel and snug it by hand. Follow the suppressor's manual for torque and maintenance, and check the mount stays tight during use. About Gemtech Gemtech designs and builds firearm suppressors and suppressor accessories. Its mounts and adapters let one suppressor work across different hosts. Frequently Asked Questions Which suppressors does this mount fit?The Gemtech GM-45, Lunar 45 and Blackside. What thread pitch is it?1/2x28. Gemtech sells other pitches separately, including 5/8x24, 1/2x36 and .578x28. Why would I need a thread mount?It lets you mount the suppressor directly on a fixed-barrel firearm. What is the part number?Gemtech part number 12196. Is this mount a suppressor?No. It is an accessory and does not include a suppressor. Browse more Gemtech products or shop our suppressor accessories.