HIPERFIRE Hipertouch Auto Trigger AR15/10 M4/M16 Assembly Full-auto. These Rifle Triggers designed by HIPERFIRE feature a curved trigger bow with backbone that delivers a crisp clean break with every pull. This HIPERFIRE Hipertouch Auto Trigger allows you to adjust the pull weights to 2.5lbs. or 3.5lbs. to fit your preference. The reset is so positive that you can feel and hear when it occurs. Get a match grade feel and premium performance when you swap in this remarkably durable HIPERFIRE Hipertouch Auto Single-Stage Trigger. PLEASE NOTE: The trigger is NOT made to fit on a SEMI-AUTO firearm. Specifications for HIPERFIRE Hipertouch Auto Trigger: Manufacturer: HIPERFIRE Color: Black Trigger Pull Weight: 2.5 - 3.5 lb Trigger Pin Size: Mil-Spec Gun Make: AR Platform Gun Model: AR-10 M4 AR-15 Gun Type: Automatic Rifle Condition: New Features of HIPERFIRE Hipertouch Auto Trigger: Full-Auto Select-Fire: Very Robust Built Like a Tank Cam-Over Toggle Engine: Very Hard Hitting Hammer Soft-Start Lock-Up for Pre-Ignition Stability You-Adjust Pull Weights of 2.5 and 3.5 lbs. Curved Trigger Bow with a Backbone Single-Stage Crisp Clean Trigger Break Very Short Over-Travel Very Positive Reset You Can Feel and Hear Package Contents: HIPERFIRE Hipertouch Auto Trigger What firearm models does the manufacturer say HIPERFIRE Hipertouch Auto Trigger is compatible with? The manufacturer says that HIPERFIRE Hipertouch Auto Trigger is compatible with AR-15 M4 AR-10HIPERFIRE HPTA: Hipertouch Auto Trigger AR15/10 M4/M16 Assembly Full-auto