With Wilson Combat's advanced engineering and design, the TTU H2 trigger offers an impressive pull of between 4.5-5 lbs., without any need for alteration or tweaking. This reliable and sturdy trigger can be relied upon to provide reliability when you need it most! It also has a reduced reset for rapid follow-up shots and its unique hammer geometry ensures reliable firing with all types of military and surplus ammo. Plus, it meets or exceeds drop safety standards due to its 1911-style half-cock notch. Constructed with H13 heat-treated trigger, hammer, sear, and a stainless steel spring for straightforward installment, their pre-assembled CNC machined housing will ensure bulletproof reliability. Developed by shooters for shooters after rigorous tests, the Tactical Trigger Unit has firmly established itself as one of the best drop-in AR triggers available on the market today.