Transform the feel of your AR-15 with a trigger upgrade built for speed, precision, and reliability. This Trigger Upgrade Kit pairs the Sierra 3 lb Drop-In Skeletonized Performance Trigger with a premium anti-walk pin set, creating a complete solution for builders seeking improved trigger control and long-term durability. The drop-in cassette design simplifies installation while delivering a crisp single-stage break and lightning-fast reset. Paired with heavy-duty anti-walk pins that prevent trigger and hammer pin rotation, this kit is an excellent choice for competition rifles, range guns, or any AR-15 that deserves a cleaner, more consistent trigger pull.
The Sierra Trigger is engineered to provide the speed and consistency demanded by serious shooters. Its drop-in cassette design makes installation straightforward while delivering a crisp 3 lb single-stage pull with an exceptionally short reset. The skeletonized hammer reduces moving mass for faster lock time, allowing rapid follow-up shots without sacrificing reliable ignition. Whether you're shooting competitions or improving your range rifle, the Sierra Trigger delivers smoother operation and enhanced control over every shot.
A quality trigger deserves equally dependable retention hardware. The included premium anti-walk pin set replaces the factory hammer and trigger pins with precision-machined components designed to eliminate pin rotation during firing. Featuring OEM-spec dimensions for standard .154" receivers and durable one-piece dog bone retainers, these pins help maintain consistent trigger alignment while reducing unnecessary wear on the lower receiver. Complete installation hardware is included for a secure, long-lasting installation.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Verify compatibility with your specific lower receiver. Inspect all components before installation.
Platform: AR-15 Pattern Receivers
Trigger Type: Drop-In Single-Stage Trigger
Trigger Pull Weight: 3 lbs
Trigger Style: Skeletonized
Reset: Ultra-Short Reset
Trigger Compatibility: Standard Mil-Spec .154" Small Pin Receivers
Anti-Walk Pin Type: One-Piece Dog Bone Retention System
Pin Diameter: .154"
Product Material: Steel Trigger Components with Steel Anti-Walk Pins
Finish: Black
Installation: Drop-In Design with Included Mounting Hardware
Included Components: Drop-In Trigger Assembly, Anti-Walk Pin Set, Dog Bone Retainers, Installation Hardware
Check out our Shipping and Processing Times Check out our Warranty/Returns and Terms and Conditions Check out our State Restrictions page