Griffin Armament M4SD-II QD

List Price: $899.99

The Griffin Armament M4SD-II sound suppressor is the result of a ten year study of sound suppressor design and rigorous seven year R&D program pulling from lessons learned in environments from computer design, field testing, to actual combat operations in Afghanistan during Operation Enduring Freedom. The M4SD II was designed to provide the optimal combination of lightweight, peak performance, and durability. Our suppressors are computer designed, critically accessed in FEA, tested, and optimized. The M4SD II is CNC machined, and fully TIG fusion welded for maximum thermal transfer and unparalleled strength and durability. Every component in the M4SD II is manufactured from 316L stainless steel, with heat treated 718 inconel baffles throughout. The suppressor bores are wire EDM cut for maximum accuracy and fully blueprinted tolerances. The mounting system and mounts of the M4SD II sound suppressor are precision ground to ten thousandths of an inch for minimal, repeatable and utterly dependable point of impact shift. Built on a mountain of development, the M4SD-II is the pinnacle of performance- the equal of the best competing products available anywhere in the world. * Ships with Hammer Comp


  • Fully welded
  • Flawless Bore Technology
  • Industry leading sound performance
  • Minimal back pressure design
  • Extremely versatile and fast mounting system
  • High strength, high temp, corrosion resistant alloys
  • Full Auto rated on 10.5″ barrels and longer
  • Multicam Silencer Pouch Included
  • M4SD Shims and over-travel stop Included
  • Compatible with M4SD or A2 Nato Spec Compensators
  • Cerakote Finish
  • Lifetime Warranty


  • Diameter: 1.5″
  • Overall Length: 6.6″
  • Weight: 17.4 ounces
  • Materials: High Strength, High Temp, Corrosion Resistant 17-4PH Stainless Steel
  • Attachment: Griffin M4SD Mounts and USGI spec A2 compensators*
  • Finish: High Temp Griffin Endura-Kote
  • Attenuation: 35DB




  • MSRP: $995.00