The Wilson Combat 9mm TTU trigger is a pinnacle of precision engineering and innovative design, crafted to deliver an exceptional shooting experience without the need for any modifications. With a consistent pull weight ranging from 3.5 lb - 4 lb, this trigger is engineered for reliability and performance when it matters most. Its reduced reset feature allows for rapid follow-up shots, while the unique hammer geometry ensures dependable firing across all types of military and surplus ammunition. Safety is parabipod and the TTU trigger meets or exceeds drop safety standards, thanks to its 1911-style half-cock notch. Constructed with H13 heat treated components, including the trigger, hammer and sear, along with a stainless steel spring, this trigger is designed for straightforward installation and long-lasting durability. The pre-assembled CNC machined housing guarantees bulletproof reliability, making it a trusted choice for shooters who demand the best. Developed by shooters for shooters, the tactical trigger Unit has undergone rigorous testing to establish itself as one of the premier drop-in AR triggers available today. Whether you're in the field or at the range, the Wilson Combat 9mm TTU trigger is your go-to solution for unmatched performance and reliability. There are no adjustment screws CNC precision machined H13 steel with a DLC (diamond-like carbon) finish Positive trigger reset Trigger pull weight - 3.5 lb - 4 lb Engineered specifically for the WC AR-9 carbine