Elftmann Tactical Apex, FA, Adjustable Trigger, Curved with Black Shoe, Fits AR-15, Anodized Finish, Red APEX-B-C-FA The ELF APEX Trigger has been built for performance. Pull weight is so easy to adjust it can be done in seconds without removing the trigger from your lower receiver. A second-to-none AR-Platform drop-in trigger system that is strong and light" made of wire EDM machined" hardened A2 tool steel and lightweight aircraft-grade aluminum. Installation can be done in minutes using the supplied installation screws. The APEX trigger may be ordered with a curved or straight shoe along in black or red. The amazingly short take-up" glass-rod crisp break" no skip technology and their new adjustable sear lets you customize the over-travel can be compared to the finest custom 1911 triggers. Adjustability puts you in charge based on your current use. If you are looking for the finest adjustable trigger for your AR platform" this is the trigger system for you.