RISE Armament RA-100 Two-Stage Trigger Flat 4.5 lb Black. The forceful hammer spring provides solid reliable power reducing the chance of light strikes. It delivers strong hits and confident performance. Whether you re training on duty or in the field this trigger hits hard and fires strong when it matters most. Installing the RISE RA-100 is easier than most non drop-in triggers. The pinned disconnector comes pre-assembled eliminating loose parts or delicate springs. Insert the trigger followed by the hammer assembly and secure them with the included pins. Specifications for RISE Armament RA-100 AR-10/15 Two-Stage Trigger: Manufacturer: RISE Armament Color: Black Trigger Material: S7 Tool Steel Trigger Pull Weight: 4.5 lb Trigger Pin Size: 0.156 in Hand: Ambidextrous Gun Make: AR Platform Gun Model: AR-10 AR-15 Finish: Nitride Features of RISE Armament RA-100 AR-10/15 Two-Stage Trigger Grunt Force Power: Hits with relentless hammer force. Drives reliable primer ignition. Built to perform shot after shot even with steel-cased ammo. Simplified Component Installation: Fewer parts than other component triggers. No tricky disconnector assembly. No complex alignment steps. Rugged Reliability: Engineered to endure the harshest conditions without compromising performance.Forceful Tactile Reset: A clean easy-to-feel reset. Sleek Flat Blade: Increased leverage for better control. Package Contents: RISE Armament RA-100 AR-10/15 Two-Stage Trigger Milspec Pins What firearm models does the manufacturer say RISE Armament RA-100 AR-10/15 Two-Stage Trigger is compatible with? The manufacturer says that RISE Armament RA-100 AR-10/15 Two-Stage Trigger is compatible with AR-15 AR-10RISE Armament RA-100F: RA-100 Two-Stage Trigger Flat 4.5 lb Black