This Timney set the standard for aftermarket trigger upgrades for the AR/M4 rifle. The 681-ST is a drop in, complete assembly trigger with a pull weight of 2.5 - 3 pounds with a straight trigger profile designed specifically for Pistol Caliber Carbines. The trigger makes use of your rifle's original hammer/trigger pins as well as the safety. Timney triggers are an easy way to significantly upgrade your PCC without having to pay high gunsmithing costs. Features: No gunsmith needed, easy to install Ready for the range, no adjustments needed No additional parts needed to install trigger Straight Trigger Shoe Trigger allows you to become more accurate with your rifle Palmetto State Armory carries a full line of firearms and firearms accessories at amazing prices!#html-body [data-pb-style="62DF8287E5A45"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF8287E5A52"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}