robodaboRex Silentium Low Profile Direct Thread Mount. I have 5 total. Two are 5/8x24, Three are 1/2x28 1.50" Diameter (1.42" across flats) Larger wrench flats for easier installation and removal 0.580" Long overall Adds 0.100" to length of suppressor 1.375-24 Standard HUB threads 1.6 oz. 17-4 Stainless Steel Hardened to 47Rc at approx 190,000 psi tensile strength Dark Bronze color (as heat treated) $50 each
