Choose The Best Post For Your Type Of Shooting
Steel front sight posts offer several profiles for different kinds of shooting and AR-15 variants. A1 tapered post has 5-notch base for the classic M16A1. A2 square front post has the 4-notch base currently in use on military rifles. Extended has the same 4-notch base but stands .03" taller than the A2, so it’s ideal for rifles with carry-handle rear sights or front sights requiring a taller post. DCM National Match has a 5-notch, A1 base with a round post that’s only .05" in diameter to aid in precise sight alignment and adjustments for target shooting.
AR-15, Issue:09, Page:059
Big Book Catalog, Issue:67, Page:061
SPECS: Steel, matte black finish. A1 - .267" tall, (6.7mm) .07" (1.7mm) O.D. A2 - .267" (6.7mm) tall, .07" (1.7mm) wide. Extended - .297” (7.5mm) tall, .07" (1.7mm) O.D. DCM National Match - .267" (6.7mm) tall, .05" (1.2mm) O.D.