CAM-LOK® Pistons (for tilt barrel pistols)

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The CAM-LOK® (Covert Application Mount - Locking) is a universal QD piston system comprised of two parts, the piston, and the barrel adapter.  This product page is for the piston (bronze color part that is installed in the suppressor). 

The Griffin Armament CAM-LOK® interface affords the user the ability to convert the suppressor to a much faster and more secure mounting solution on browning style action (tilt barrel) pistols vs it's legacy technology, single piece, direct thread piston counterparts.  This system provides a rapid, secure attachment to the host pistol.  Direct thread single piece pistons have several negative attributes.  They do not accept tools, and are hand tightened to the host firearm. As a result of hand installation, they loosen when the piston system reciprocates under slide cycling during the firing sequence.  This vibration and inadvertent loosening of pistol silencers, requires end users to constantly check tighten pistol silencers.  This periodically causes users to have "bad range days" with unforeseen baffle strikes and end cap strikes.  These unfortunate events cause logistically burdensome work for consumers to communicate with service departments, ship products back and forth, and sometimes assume charges for repair for these issues.  

No longer do users need to worry about their pistol suppressors loosening during use (as with traditional fixed direct thread pistons).  The CAM-LOK® system supports a 3/4" socket wrench for installation with prevailing torque, and features a taper lock system, which encourages secure attachment, despite the piston still actuating for and aft during the firing sequence.  The piston can be attached / detached in any one of three, 120 degree positions, ensuring there are no "false positive" interfacing positions to slow deployment of the suppressor onto the host firearm.  Additionally, the manufacturing accuracy of the interface is held to Griffin Armament's high quality standards for squareness, and concentricity, ensuring that each mounting position has similar and minimal POI shift influence. To support this, the mating pistons have all mating diameters and interfacing geometry qualified in a single operation, for tool quality accuracy and perfection.  A similar manufacturing theory was applied to the barrel adapter for maximum alignment accuracy.  

End users benefit from being able to attach their silencer to various adapter interfaced host firearms, without having to disassemble the suppressor and change the piston to a different thread pitch.  The CAM-LOK® pistons are "universal"; accommodating any pistol mounted with a 3 Lug CAM-LOK® barrel adapter.  Additionally, end users with different brand suppressors supported by the CAM-LOK® piston family, will be able to benefit from the interchangeability of CAM-LOK® barrel adapters between piston models. 


These Pistons are required for use with the Revolution®, Resistance®, Optimus® 9mm, and Bushwhacker® 46 in the pistol configurations.  

It is important to intermittently clean and lubricate the exterior of the piston and interior of the booster housing to ensure smooth reciprocation with the O ring in the piston retainer.
O-Rings should be replaced intermittently when worn to ensure alignment of the silencer with the booster assembly. Failure to replace damaged or worn O-rings could result in a baffle strike or damage to the piston components.

Piston are H900 heat treated with a rust inhibitor. Please note, color and color pattern will vary due to the heat treatment.

Installation & Use Notes  : Suppressor should be tightly assembled when using this product to avoid inadvertent disassembly of the suppressor when removing it from QD barrel adapter. Barrel adapters should be installed to their host firearms with a minimum torque rating of 20 ft/lbs using a 3/4 socket and needle type torque wrench.  Use of a box end wrench will not have optimal contact with the wrench flat geometry on the adapter and may damage the adapter.

Use of the CAM-LOK® system with a fixed spacer on a fixed barrel firearm will cause damage to the suppressor.  This is for use on handguns with tilt barrel pistols only such as Glock, HK, SIG, 1911, S&W M&P....etc.   A fixed firearm would be a 9mm carbine (PCC), a bolt action, etc. 


Features :

  • Patented CAM-LOK® (Covert Application Mount - Locking) universal QD piston attachment system
  • 3 mounting positions, 120 degrees separated for rapid mounting
  • Internal taper surface locks in place with interfacing barrel adapters and drastically reduces or eliminates common baffle/end cap strikes  
  • Compatible with Universal QD pistons barrel adapters (sold separately) 
  • Total system weight is identical to legacy direct thread pistons
  • H900 heat treated for improved durability and wear resistance 
  • 17-4 stainless steel material


Additional Details

Type Of Part:
Attachment System:
Thread Pitch:
Thread Pitch:
Thread Pitch:
13.5x1mm LH
Thread Pitch:
16x1mm LH
Thread Pitch:
16x1mm RH
Thread Pitch:
9/16x24 RH


6 Reviews

  • 5
    Cam Lock Piston

    Published by Bill Poynter on 24th Aug 2020

    I ordered two sets of cam lock pistons and thread adapters for my Silencerco Octanes as soon as I heard about them. Pisrons, no matter the manufacturer, have to be checked frequently when shooting because they can cone loose. This works as advertised. It protects the threads, stays tight when shooting, and attaches quickly. I am impressed that they made these for many popular silencers other than just their own. Anybody want to buy some used Silencero piston? Because I won't be using them anymore!

  • 5

    Published by Talbert Frazer on 24th Aug 2020

    Just buy it, you know you want it and it's simply awesome.

  • 5

    Published by Alan on 24th Aug 2020

    This piston worked great on my SilencerCo Omega 9K. You have to get the cam-lok barrel adapter also to make the entire system work. Let me tell you these two products work great. With utilizing the corse thread in conjunction with the taper lock between the two parts the suppressor doesn’t move. Screw it down the half a turn and it is locked on. No amount of shooting on my Glock 19, Archon Type B, CZ P01 did it ever start to back off the threads like a typical direct thread does. This is a great product!! Thank you Griffin for inventing such a wonderful product.

  • 5
    Interesting Design!

    Published by TJ on 12th Aug 2020

    One piston to rule them all out of my Bushwhacker 46. Couple this with the CAM-LOK™ barrel adapters and you don't need another piston!

  • 5
    Cam-Lok Piston for Omega 9k

    Published by Hue Jasss on 12th Aug 2020

    When I first saw this product, my interested was PIQUED. Mostly because I just love innovation and forward thinking design, but also because I love all things suppressed and this is just plain cool. Conventional pistons directly thread onto your barrel and should be REALLY TIGHTENED to ensure alignment and avoid disaster. I used to use both hands to put my Omega 9k on and sometimes, it wouldn’t want to come off after firing. That’s the epitome of first world problems I know, but this piston and the corresponding muzzle devices helped alleviate that and I can do so many more things with the time I’ve saved by not having to thread my cans on directly. Not only is it very fast, there’s a taper in the piston and devices that ensures alignment AND friction to keep the can tight without having to smoke it on there. I was curious to see how well it worked and after a suppressed mag dump with just a single hand of torque, I’m ecstatic to report that it was still tight and I had no issues. This thing is awesome and worth every penny in my opinion, but I’m always suppressing everything that I can so your mileage may vary. The only downside to me is the cost of the muzzle devices for your barrels. At $60 a piece, that adds up and if you’re like me, you don’t like swapping devices around if you don’t have to. Given Griffin’s innovation, I absolutely didn’t mind paying for a new piston and two muzzle devices. I’ll be picking up at least one more and then a few more as I acquire more threaded pistols! Thank you Griffin!

  • 5
    Universal QD Piston

    Published by Ken S. on 5th Aug 2020

    easy to install, makes attaching the silencer fast and easy

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