Designed as a drop-in replacement for AR-15-pattern rifles chambered in .22 Long Rifle, 5.56x45 mm NATO and .308 Win. (9 mm Luger conversions are not compatible), Velocity Triggers offer a crisp, single-stage trigger pull at an affordable price. Installation is easily accomplished using the factory pins and two provided 8-32x1/8" screws. The steel hammer and disconnector are treated with NP3, a nickel-based finish that resists corrosion and reduces friction, while the trigger undergoes a black oxide process and is hand-polished for smoothness. The trigger’s housing is machined from 6061-T6 billet aluminum and then green anodized for additional corrosion resistance and to ease cleaning. Options include either a traditional curved trigger or a tactical straight trigger, and pull weights of 3, 4, and 4 lbs., 8 ozs. are available. Price: $150. Contact: Velocity Triggers (602) 595-5931; velocitytriggers.com.