The Timney AR-15 Small Pin Trigger, 3lb, Solid Straight (brand part no. 667SST) is a self-contained, non-adjustable trigger built from steel and aluminum that fits most AR-15 rifles. It uses the standard 0.156-inch small trigger pin that mil-spec AR-15s are built around; only a few older Colt rifles use the larger 0.176-inch pin and need Timney’s large-pin version instead. The trigger uses the rifle’s existing hammer and trigger pins, so no special hardware is required, and it breaks at a fixed 3-pound pull weight through a solid, straight trigger shoe. For AR-15 owners who want a straightforward, drop-in 3-pound trigger, this AR trigger fits nearly every modern build.

Key Specifications

• Breaks at a fixed 3-pound pull weight, non-adjustable.
• Uses a solid, straight trigger shoe.
• Sized for the small trigger pin, 0.156 inch, the mil-spec standard.
• Fits most AR-15 rifles built to mil-spec pin dimensions.
• Built from steel and aluminum.
• Ships as a self-contained unit.
• Uses the rifle’s existing hammer and trigger pins, no special hardware needed.
• A few older Colt AR-15s use the larger 0.176-inch pin and need Timney’s large-pin version instead.
• Shipping weight runs about 0.2 pound.

Frequently Asked Questions

Will this trigger fit my AR-15? Yes, almost all AR-15 rifles use the 0.156-inch mil-spec small pin this trigger is built for; only a few older Colt rifles need the large-pin version.

Do I need special pins to install it? No, it uses the rifle’s existing hammer and trigger pins.

Is the pull weight adjustable? No, it is a fixed, non-adjustable 3-pound pull.

Buy the Timney AR-15 Small Pin Trigger, 3lb, Solid Straight

A self-contained, drop-in 3-pound trigger built around the standard mil-spec pin fits nearly every AR-15 on the market. Order it from our Lubbock, Texas gun shop for fast, insured shipping.