We offer AR Gold trigger variations for AR-15, AR-10, and AR-9 platforms, each compatible with a wide range of calibers. However, compatibility can vary due to firearm-specific designs and tolerances. This guide outlines key compatibility considerations.

General Compatibility:

  • Mil-Spec Compliance:
    • The AR Gold trigger is designed to fit any AR platform rifle that adheres to the relevant dimensions of the M16/M4 Technical Data Package.
    • Most AR-15 and AR-10 rifles meet these specifications.
  • Caliber Compatibility:
    • AR-15: .223, 5.56, 6.5 Grendel, .300 BLK, .22 and other compatible calibers.
    • AR-10: .308/7.62, 6.5 Creedmoor, and other compatible calibers.
    • AR-9: 9mm and other pistol calibers.

Known Incompatibilities and Considerations:

  • Colt Firearms:
    • Colt firearms often have a non-standard pocket in the inner receiver and, in older models, oversized pins, leading to incompatibility.
  • SIG MCX:
    • Our triggers are incompatible with the SIG MCX due to the factory-installed firing pin lock in the lower receiver. Removal of this lock may enable compatibility.
  • SIG MPX:
    • The SIG MPX presents challenges due to dimensional variations.
    • Generally, the bolt carrier sits higher than a Mil-Spec .223 bolt carrier, potentially causing cocking issues.
    • Our .308 fixed trigger is often the correct trigger for the MPX, as it stands .025" taller in the cocked position.
    • Loose fit between the upper and lower recievers may also create issues.
    • An expanding rear pivot takedown pin may resolve some fitment issues.
  • H&K AR Platforms:
    • Our triggers are incompatible with H&K AR platforms that feature a firing pin block.
  • Aero Precision Lowers:
    • Some Aero Precision lowers have an added internal ledge that is not milled to mil-spec dimensions.
    • This ledge can cause fitment issues with our fixed trigger model.
    • Our adjustable trigger, with its slightly thinner housing, may resolve this issue.
    • Alternatively, the ledge can be carefully filed down to mil-spec dimensions.
  • Lower Receiver Tolerances:
    • Significant deviations from Mil-Spec dimensions in lower receivers can cause fitment issues.
    • Lower receiver pin holes that are not lined up correctly can also cause issues.
  • Receiver Pin Compatibility:
    • Our triggers are compatible with stock lower receiver pins and most aftermarket anti-walk pins.
    • Ensure stock pins are installed with the grooved side on the left (when looking down the sights).
    • Our pins are grooved on both sides.
  • .22LR Compatibility:
    • AR Gold triggers function well with .22LR AR uppers and rifles, provided the bolt carrier's cocking line is within specifications.
    • Most .22LR platforms adhere to these specifications.
    • Older .22LR uppers with out-of-spec firing pins may have ignition issues with some ammunition, but this is less common with newer models.

PCC (Pistol Caliber Carbine) Compatibility:

  • PCC compatibility is complex due to the lack of industry standards.
  • AR-9 Platform:
    • Our PCC-specific trigger is designed for blowback AR-9 platforms.
    • CMMG Radial Delayed Blowback platforms use the .223/5.56 trigger.
    • Bolt type is the most important factor.
    • We offer a bolt identification page to help determine compatibility.
    • If the bolt drags when the trigger is held back, we offer part swaps.
  • Important note: While PCC platforms have more variables than standard AR platforms, our triggers are designed to function within them. Please utilize the bolt identification page, and remember we offer part swaps, and a 30 day money back guarantee.

Troubleshooting and Support:

  • 30-Day Money-Back Guarantee:
    • All triggers purchased directly from us come with a 30-day money-back guarantee.
    • If you encounter any compatibility issues, you can return the trigger for a full refund.
  • Customer Support:
    • If you have any questions or concerns about compatibility, please contact our support team.

Key Takeaways:

  • Compatibility depends on Mil-Spec adherence and firearm-specific designs.
  • Colt, SIG MCX, SIG MPX, H&K, and some Aero Precision lowers have known incompatibilities.
  • .22LR is compatible with the trigger, but some older models may have issues.
  • PCC platforms have more variables to consider.
  • Lower receiver tolerances are a large factor in proper fitment.
  • We offer a 30-day money-back guarantee for peace of mind.