PSR™ DUAL-LOK™ Flash Hider

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The PSR™ (Precision Suppressor, Rifle) DUAL-LOK™ Flash Hider is a precision DUAL-LOK™ muzzle device made specifically for the DUAL-LOK™ PSR™ suppressors. PSR™ (Precision Suppressor, Rifle) over the barrel suppressors provide unprecedented blow back reduction, sound performance, and accuracy. 

The PSR™ DUAL-LOK™ Flash Hider is equipped with 3 flash suppressing tines. Also incorporated into the muzzle device, a taper surface to ensure solid lock up and minimal/repeatable POI Shift. The muzzle device integrates 60 machined mounting position locking grooves, which is doubled by the mount’s two locking positions, hence the double entendre DUAL-LOK™. How is this achieved? The mounts’ two locking positions are machined out of phase of one another by 3 degrees which provides the 120 effective locking positions and ensures a tightly mounted and locked suppressor.  When the suppressor is installed, only one of the two positions will generally function by allowing the spring to push the locking collar rearward over the splines.  Melonite QPQ provides a durable, attractive finish. The PSR™ Flash Hider is machined from high strength 17-4 stainless steel that is corrosion and wear resistant.

The flash suppressor does not require timing.

Host Firearm Barrel Requirements : 1.95" rear of the thread shoulder needs to be .775" OD or smaller in order to provide clearance for interfacing.  The tool used to cut this step if applicable should have a .016" corner radius or smaller, or the corner radius should be compensated for by adding length to the 1.95" step.  

Diameter: 1.075" [splines] .93" [unit]

3.8", added length : 1.25"

Weight: 3.6 ounces
Materials: 17-4PH Stainless Steel
Finish: QPQ


  • Utility patent pending 
  • Wear free mounting system, requires no consumable parts
  • 3 flash suppressing tines
  • Taper lock interface ensures security and accuracy
  • 120 effective positions ensure a rock-solid suppressor mount and provide extremely low POI shift 
  • 17-4 PH Stainless steel
  • Nitrided black for increased surface hardness, corrosion, and wear resistance
  • ¾” wrench flats on muzzle devices 
  • No shims required


  • 1/2x28 .22cal
  • 5/8x24 .30cal

Additional Details

5.56mm (.223)
7.62mm (.30)
Thread Pitch:
Thread Pitch:
Type Of Part:
Muzzle Device
Attachment System:

2 Reviews

  • 5
    Enhanced Mark 12 Build

    Published by Roth on 19th Sep 2023

    The light weight and Eco-flow design are a welcome upgrade to an old workhorse. Swapping my Mk12 to 6ARC & running the Dual Lok PSR OTB 7 suppressor! Well done Griffin.

  • 5
    Just what I needed

    Published by Mario on 9th Aug 2023

    I’m glad they’re bringing back the PSR. I look forward to getting the suppressor and matching it up with Multiple uppers.