CAM-LOK® barrel adapters

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The CAM-LOK® (Covert Application Mount - Locking) Universal piston system is comprised from two parts, the piston or CAM-LOK® direct thread adapter, and the barrel adapter.  This product page is for the barrel adapter (smaller black component pictured). 

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 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® interface supports a 3/4" socket wrench for installation with prevailing torque, and features a taper locking system, which encourages secure attachment, despite the piston still actuating for and aft during the firing sequence.  The piston or CAM-LOK® direct thread adapter 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 and CAM-LOK® direct thread adapters 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 piston is "universal"; accommodating any pistol mounted with a 3 Lug universal 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® QD barrel adapters between CAM-LOK® piston models. This adapter also acts as a thread protector for the more expensive barrel's threads which when used with fixed pistons, are traditionally exposed. 

 9mm versions are shorter  .45 caliber versions feature an extended cylinder to attach to the larger diameter barrels. 

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.

*NOTE*   "1/2x28 special" is intended for compact 9mm pistols which generally have smaller outside diameter barrels and thus no typical thread shoulder.  Examples are : Sig P365, Glock 43. Glock 48... etc.   Users with mid to full size handguns should choose the standard "1/2x28" size

FOR FIXED BARREL APPLICATIONS (PISTOL CALIBERS ONLY)  : This can be accomplished using one of our CAM-LOK® direct thread adapters, in conjunction with a CAM-LOK® barrel adapter. 

Features :

  • CAM-LOK® (Covert Application Mount - Locking) Patented Universal QD piston attachment system
  • 3 mounting positions, 120 degrees separated for rapid mounting
  • Forward taper surface locks in place with interfacing piston and drastically reduces or eliminates common baffle/end cap strikes 
  • Coarse threads are top cut to increase durability and wear resistance
  • 3/4"or 19mm wrench pattern accommodates socket wrench for secure and easy installation 
  • Compatible with Universal QD pistons (sold separately)
  • Compatible with Universal Direct Thread Adapters (sold separately) 
  • Internal bore reduces side concussion and visual disturbance vs blind muzzle
  • Total system weight is identical to legacy direct thread pistons
  • QPQ Nitride finish for attractive, durable black finish
  • 17-4 stainless steel material
  • Also supports Universal Carry Comp

Additional Details

.40 cal
.45 cal
Thread Pitch:
Thread Pitch:
1/2x28 Special
Thread Pitch:
1/2x28 SMG/PCC
Thread Pitch:
Thread Pitch:
Thread Pitch:
Thread Pitch:
13.5x1mm LH
Thread Pitch:
14.5x1mm LH
Thread Pitch:
16x1mm LH
Thread Pitch:
16x1mm RH
Attachment System:
Type of Part:
Barrel Adapter


16 Reviews

  • 5
    Amazing innovation

    Published by Sal V on 17th May 2022

    Great amazing product simplified process of removing host to mount. Makes your system function like a 3 lug system for hand guns.

  • 5
    9mm Barrel adapter

    Published by John on 3rd May 2022

    Shipping is fast, part has a very nice finish threads on barrel nice. Over all nothing to complain about.

  • 5
    Griffin products

    Published by Mike Scarbrough on 7th Apr 2022

    I am absolutely impressed with Griffin Armament products the locking system is super fast and easy to operate. a giant thumbs up

  • 5
    Quick, reliable attachment!

    Published by Luke on 21st Mar 2022

    Love these. One of the best innovations is pistol suppression ever. So quick to attach and remove.

  • 5
    A must have

    Published by Marc a south on 28th Dec 2021

    A must have for a Bushwacker 46 I can go from one gun to another without changing anything plus I didn’t see any impact shift like you do with some thread ons

  • 5

    Published by Kerry Kanemitsu on 21st Dec 2021

    Called Griffin and they made good on the order. They will be making the claim with FedEx. Great Service.

  • 5

    Published by Vance L on 9th Dec 2021

    Both adapters are well made & a perfect fit.
    Should have torque specs included.

  • 5
    CAM-LOK 9mm Special

    Published by Unknown on 20th Nov 2021

    Bought to use for QD mounting a .22LR silencer. The CAM-Lok system is a good update to the hundred plus year old interrupted thread technique.

  • 5
    High Quality

    Published by Nathan Puffenbarger on 12th Nov 2021

    Just like Griffin's Suppressors, High Quality Everything! Love your products and company.

  • 4
    Almost perfect!

    Published by Steve on 23rd Apr 2021

    Quality is excellent. The only reason I didn't offer 5 stars is that it isn't offered in a stainless finish. Many firearms are manufactured with SS barrels and a stainless muzzle device would look better.

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