Elftmann Tactical SE, Adjustable Trigger, Large Pin, Curved with Black Shoe, Fits AR-15, Anodized Finish, Red SE-170-B-C The ELF-SE Drop-In Trigger maintains the Elftmann reputation for quality" craftsmanship and customer service in an affordable package. Extremely short takeup" clean crisp break and very short" positive reset. It has a updated look with brand features such as" adjustable pull weight being one of them!