The Griffin Armament Taper Mount PLAN-A XL adapter provides a Griffin Taper Mount interface for Silencerco Hybrid, OMEGA, and Harvester 338 as well as DEAD AIR ARMAMENT NOMAD, and other suppressors with mount interface inside diameter threading of 1.375"x24. No proprietary tools required. Machined from billet 17-4 stainless steel, this adapter provides a precision made interface that gives you access to nationally recognized Griffin Taper Mounts and accessories. Precision, durability, and value are at the core of Griffin product design and manufacturing. This product allows you to affordable kit up with the best muzzle devices in the industry. The Plan-A XL adds 0.80" in length over the original Plan-A Taper Mount Adapter, or 1" to the suppressor OAL which allows for more silencers to be compatible with a wider range of Griffin Armament Taper Mount muzzle devices. Features17-4 PH SS Billet MachinedBlack Nitride finish2.5 Ounce WeightTaper Mount Repeat-ability and ver...