Griffin Armament CAM-LOK QD Piston for Sig Sauer SRD Suppressors - Stainless Steel

The Griffin Armament CAM-LOK QD piston for Sig Sauer SRD suppressors solves a real problem that direct-thread piston users know well: loosening. Unlike fixed single-piece pistons that hand-tighten and gradually work loose under slide cycling, the CAM-LOK system uses a patented taper-lock interface that stays put even as the piston cycles back and forth during firing. The result is fewer surprises at the range and no more constant retightening between sessions.

Built from 17-4 stainless steel and heat-treated to H900 spec, this piston accepts a standard 3/4 socket wrench for installation and removal—a significant practical advantage over hand-tightened designs. The three 120-degree mounting positions let you attach your suppressor quickly without hunting for alignment, and Griffin's manufacturing tolerances ensure minimal point-of-impact shift between positions. If you're running a Sig Sauer SRD suppressor with a CAM-LOK barrel adapter (sold separately), this piston offers the secure, repeatable mounting system that keeps your group tight and your day on track.

The real win: interchangeability. Once you have the CAM-LOK ecosystem set up across different host firearms with compatible barrel adapters, you can move your suppressor between guns without swapping pistons or disassembling the can. For shooters who run multiple hosts, that's a game-changer. System weight mirrors legacy direct-thread alternatives, so you're not adding heft for the convenience and reliability you're gaining.

Key Features

• Patented CAM-LOK universal quick-detach piston system eliminates loosening under recoil
• 3/4 socket wrench installation with prevailing torque for secure, tool-assisted mounting
• Three 120-degree mounting positions for rapid, fail-safe attachment
• Internal taper-lock geometry drastically reduces baffle and end-cap strikes
• 17-4 stainless steel construction, H900 heat-treated for durability
• Interchangeable across any pistol equipped with CAM-LOK barrel adapters
• Precision-manufactured for minimal POI shift between mounting positions

Specifications

Frequently Asked Questions

Will this CAM-LOK piston work with other Sig Sauer suppressors?

This piston is designed for Sig Sauer SRD suppressors. Compatibility with other models depends on whether they accept CAM-LOK QD piston systems. Check your suppressor's documentation or contact us if you're unsure.

What barrel adapters do I need to use this piston?

The CAM-LOK piston works with any 3-lug CAM-LOK barrel adapter. Barrel adapters are sold separately and must be matched to your host firearm's mount interface. Griffin Armament offers adapters for common pistol platforms.

Can I move this piston between different suppressors?

Yes—that's one of the CAM-LOK system's main advantages. As long as the suppressor accepts a CAM-LOK QD piston, you can swap this one between them without disassembly. Different brand suppressors in the CAM-LOK family also support interchangeable barrel adapters.

How does the CAM-LOK system prevent loosening compared to direct-thread pistons?

The internal taper-lock interface between the piston and barrel adapter creates a secure mechanical fit that persists even as the piston reciprocates during firing. Combined with socket wrench installation (rather than hand-tightening), it dramatically reduces the vibration-induced loosening that plagues traditional fixed pistons.