The Griffin Armament M4SD-L AM is a 5.56mm GATE-LOK suppressor built around a managed backpressure baffle system that gives right-handed shooters a low backpressure experience. Its core is printed from Griffin's proprietary Nickel 625X superalloy with SLM additive manufacturing and laser-welded to a machined rear for warranty serviceability. The integrated GATE-LOK mount fits Griffin GATE-LOK muzzle devices or milspec A2 birdcages and engages the muzzle device in two locations for concentric alignment with the bore. A vented flash hider end cap keeps first round flash minimal.

The box includes a GATE-LOK Hammer Comp muzzle device threaded 1/2x28, plus a branded Griffin silencer pouch. The mount has no wear-prone parts and keeps point of impact changes small when the suppressor is mounted. The spec listing gives the material as additive manufactured Nickel 625X with 17-4 H900 stainless steel, finished in High Temp Cerakote. A perpetual lifetime warranty backs the suppressor.

• Brand: Griffin Armament
• Model: M4SD-L AM
• Caliber: 5.56mm
• Mount: Integrated GATE-LOK
• Included Muzzle Device: GATE-LOK Hammer Comp (1/2x28)
• Material: Nickel 625X (Additive Manufactured) / 17-4 H900 Stainless Steel
• Finish: High Temp Cerakote