The AR-50 Primary trigger is the ideal upgrade to improve accuracy and precision. Featuring TriggerTech's Zero Creep Technology™, this drop-in trigger provides a true zero-creep break, extremely short over-travel and offers outstanding reliability, even in the harshest environments. Pull weight range of 2.5 - 5.0 lbs CLKR Technology Available in curved or flat trigger lever Zero Creep Technology™, along with hardened 440C stainless steel internal components ensure corrosion resistance and an extended service life. As Zero Creep Technology™ does not rely on coating, polishing or lubricating the key engagement surfaces, trigger pulls will be more consistent from shot to shot and after thousands of shots than you ever thought possible. All pull weights and measurements are approximate. Pull weights of TriggerTech Triggers are directly impacted by firing pin spring weight. Overweight firing pin springs may cause pulls weights to vary above the advertised range Trigger Control Details Compatibility: AR-50-A1B only Trigger Lever Type: Straight or Curved Trigger Action: Single Stage Zero Creep™: Yes TKR Technology: Yes CLKR Technology: Yes Overtravel: Sub .015" Pull Weight: 2.5 lbs- 5.0 lbs Bolt Release: Without Safety: Without Hand: Ambidextrous Warranty: Product lifetime Weapon Platform: Armalite AR-50 Material Details Housing: 7075 Aluminum (annodized) Key Components: 440C Stainless Steel PVD Black PVD stands for Physical Vapour Deposition. It is a hard and durable coating that is applied to external stainless components to give them a clean black color