YHM designed this QD Blast Deflector to work with multiple YHM QD muzzle devices. The QD Blast Deflector locks on just like a YHM Suppressor. The Mechanism is fast positive and virtually impossible to disengage accidentally. – Blast deflector can be fitted to the following mounts: – YHM Phantom Adapter – Silencerco ASR – Dead Air Keymo – Griffin Armament Plan-A – Q Plan-B – Area 419 Hellfire – Specifications – 2 Piece Blast Deflector – YHM Phantom Q.D. Adapter – 1-3/8-24 Thread Pitch – Material 17-4PH Stainless Steel – Length: 2.25 – Weight: 4.768 Oz. – Finish: Melonite QPQ – Made in the USA.