Constructed of stainless steel or titanium (see drop-down menu), Daniel SoundGuard Powered by KGM Suppressor 1.375-24 HUB direct-thread adapters are available in in A 1/2 - 28" and 5/8 - 24" TPI and provide rock-solid mounting and rapid attachment/detachment. They utilize a non-proprietary flat wrench that attaches or removes the adapter to the suppressor tube or an appropriately threaded firearm muzzle in seconds. Because no mounting adapters or other mounting hardware is required, these direct-thread adapters allow the suppressors to be conveniently and easily switched from one firearm to another compatible-caliber firearm with an appropriately threaded muzzle. Just remember to ALWAYS CHECK-AND DOUBLE-CHECK-FOR PROPER ALIGNMENT BEFORE FIRING when installing SoundGuard-or any-suppressors to a firearm. FEATURES Provides rock-solid direct-thread mounting and attachment/detachment in seconds Utilizes industry-standard HUB 375-24 UNS, enabling SoundGuard suppressors to be conveniently switched from one firearm to another compatible-caliber firearm with an appropriately threaded muzzle No proprietary tools, adapters, or other mounting hardware required