I heard Chip McCormick had re-upped on their AR trigger module so I checked it out with their Honcho Dave and he pointed me towards some suppliers like Brownell's, Midway USA and CTD. I checked one out and it works like a champ, so I put it in my duty gun, a Colt M-4 LEO, and beat it like a rented mule.....and now, I am in love....THIS is the way an AR trigger is supposed to be. I've been shooting this style of gun since my UNCLE introduced us in '68 and NEVER had a sensuous feeling about the OEM trigger, but they always worked OK. This unit from Chip gives me a warm fuzzy feeling.....clean, crisp break, and re-set. Price was reasonable too.