The RISE Armament Rave 140 Flat is the Gen 2 of the best-selling RA-140 Super Sporting Trigger (SST). Among RISE triggers, the Rave 140 Flat is an incredible budget-friendly upgrade for your AR-style platform, boasting supreme reliability. It includes free anti-walk pins. Smooth, crisp break and a short Quik-Klik(TM) reset you can feel for improved accuracy Straight, flat trigger blade for increased leverage - also available with a curved blade as the Rave 140 Curved Elementary installation - simple and fast with no set screws to tighten Single-stage, 3.5-lb. pull NoWay(TM) Take-up - Most triggers allow a degree of movement prior to engaging the sear, but not with RISE triggers. Measurements done on RISE triggers show no trigger take-up before engaging the sear, so trigger movement begins with the pull required to move and actuate the sear to release the hammer. Interior parts are S7 tool steel with heavy-hit hardening then black nitride finished for enhanced strength and corrosion resistance Contained in an anodized housing that's machined from a solid block of 6061 aluminum, which is more durable and longer lasting than punch-tin housings to help the trigger perform flawlessly under a variety of conditions Precision machined with handcrafted fine tuning Individually inspected Includes free anti-walk trigger pins for secure installation Sleek appearance to accompany its enhanced performance The ideal cost-conscious upgrade Fits AR-style platforms built to mil-spec dimensions - calibers include .223/5.56, .308, 6.5, 9MM, and more