Elftmann Tactical Se .170 Straight FA Trigger Black. Extremely short takeup clean crisp break and very short positive reset. It has a brand new look with brand new features such as adjustable pull weight being one of them Specifications for Elftmann Tactical SE .170 FA Trigger: Manufacturer: Elftmann Tactical Trigger Material: Aluminum Trigger Pull Weight: 2.75 - 4 lb Trigger Pin Size: Standard Gun Make: AR Platform Features of Elftmann Tactical SE .170 FA Trigger Fits any and all AR platforms (large pin Colt available) New Incremental Adjustment Knob Drop-Safe Adjustable from 2 3/4lbs to 4lbs without removing from lower Patented Double-Double torsion hammer spring Short pull and reset allows for rapid follow up shots Made of lightweight aircraft-grade aluminum & hardened steel Unique design of disconnector allows full width eliminating possibility of wear and double-firing New adjustable aluminum trigger shoe (comes in Straight or Curved Red or Black) Available in our NO KNOB version for B&T rifles Package Contents: Elftmann Tactical SE .170 FA Trigger Elftmann Tactical SE-.170-B-S-FA: Se .170 Straight FA Trigger Black