Enhance your HK MP5 semi-automatic rifle with the precision-engineered Timney Triggers Black Aluminum Two-Stage Trigger. Crafted from 6061 T6 aluminum this trigger housing is anodized in black for exceptional weather and corrosion resistance. The hammer constructed from S7 tool steel is heat-treated and NP3 coated delivering optimal lubricity for a superior shooting experience. Both the trigger shoe and disconnector are machined from billet A2 tool steel ensuring durability with a carbonitride coating for a smooth effortless feel. Designed to work seamlessly with your existing ejector components this trigger requires no gunsmith for installation making it a user-friendly upgrade for your firearm.