The Super 3 Gun (S3G) Trigger by Geissele could be described as a hybrid between single stage and 2-stage triggers. It makes an supreme addition to a 3 Gun Competitor’s rifle set up with a light trigger pull and fast reset speed. This trigger has a M4 curved bow type and is compatible with 1990-2009 Colt large pins. Note: This trigger was designed for use in 3-Gun competitions. Not recommended for use in duty, bench rests, small shooting groups or accuracy work. Geissele Automatics Geissele Super 3 Gun (S3G) - Large Pin Trigger 05-174