Description
PCC shooting lives and dies by the trigger, and the Timney 682ST is purpose-built for exactly that job. This is a complete two-stage drop-in assembly designed around AR-style pistol caliber carbines, so it accounts for the different feel and timing that comes with a blowback 9mm, .40, or .45 build. The straight trigger shoe and clean two-stage break give you a defined take-up followed by a crisp, repeatable wall, which is what you want when you're chasing tight splits and consistent hits.
What Sets the 682ST PCC Trigger Apart
Everything arrives factory tuned and ready to run. The pull is set to a light 2 lb weight across both stages, so there's no fitting, filing, or gunsmithing needed to get the feel Timney dialed in at the shop. The internals are machined from 6061-T6 anodized alloy with heat-treated steel components, and the whole thing wears a sharp Black and Red finish that looks right at home in a competition-focused lower. It's proudly made in the USA and backed by Timney's reputation for triggers that hold up to a real round count.
Getting the 682ST Installed
Installation is about as painless as trigger swaps get. The unit uses your carbine's existing hammer and trigger pins along with your current safety, so you're not hunting for extra parts. Drop it into the trigger well, reinstall your pins, snug down the two lock screws with the included 5/64 Allen wrench, run a function check in both safe and fire, and you're set. A base plate keeps the setscrews from marring your receiver during the process.
One thing worth knowing: this trigger is built for AR-pattern PCCs and is not designed to work in the Sig Sauer MPX or Aero Precision EPC9. If you're running a standard AR-9 or AR-40 style lower and want a lighter, more precise two-stage feel, the 682ST is a straightforward upgrade that pays off every time you're behind the gun.
Key Specifications
- Manufacturer: Timney
- Manufacturer Part Number: 682ST
- Model: PCC Trigger
- UPC: 081950682171
- Product Type: Drop-In Trigger
- Trigger Style: Two-Stage
- Trigger Shoe: Straight
- Pull Weight: 2 lbs (2+2)
- Finish: Black/Red
- Housing Material: 6061-T6 Anodized Alloy
- Internal Components: Heat-Treated Steel
- Platform: AR-Style Pistol Caliber Carbine (9mm, .40, .45)
- Country of Origin: Made in USA
- Warranty: Timney Lifetime Warranty
What’s Included
- Timney 682ST PCC complete drop-in two-stage trigger assembly
- Base plate
- 5/64 Allen wrench
- Installation instructions
Frequently Asked Questions
Will the 682ST PCC trigger fit any AR pistol caliber carbine?
It's designed for standard AR-pattern PCC lowers chambered in 9mm, .40, and .45, and it uses your existing hammer and trigger pins plus your current safety. It is not built for the Sig Sauer MPX or the Aero Precision EPC9, so those platforms need a different trigger. If you're running a typical AR-9 or AR-40 style lower, you're in good shape.
Do I need a gunsmith to install the Timney 682ST?
No gunsmithing is required. It's a complete drop-in assembly, so you insert it into the trigger well, reinstall the hammer and trigger pins, tighten the two lock screws with the included Allen wrench, and run a function check. Most people can knock it out at the bench in a few minutes.
What does a two-stage pull feel like compared to a single-stage trigger?
A two-stage gives you a defined first-stage take-up followed by a solid wall, then a crisp break for the second stage. Many PCC and precision shooters prefer this because the wall lets you prep the shot before committing to it. The 682ST is set at a light 2 lb weight across the stages for a clean, controllable feel.
Is the pull weight on the 682ST adjustable?
The trigger comes factory tuned to its 2 lb pull weight and is ready to run straight out of the box with no adjustments needed. Timney sets and tests these at the shop, so there's no dialing in required on your end. You just install it and head to the range.



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