Luth-AR FSCK-A2 Sight Completion Kit - A2 Square

The Luth-AR FSCK-A2 Sight Completion Kit bundles every small hardware piece you need to install or rebuild an A2 square front sight post on an AR-15 or M16 pattern rifle. Rather than chasing down each component separately, this convenient kit gives armorers, builders, and home gunsmiths a single part number for a complete A2 front sight service.

Inside the kit you'll find the A2 square sight post (FS-01), the front sight spring (FS-04), the front sight detent (FS-03), the swivel (BL-14), and the rivet needed to finish the assembly. Each piece is produced to Luth-AR's standards for proper fit and reliable function, making the FSCK-A2 a smart bench-staple for any AR-platform front sight swap, replacement, or full rebuild on an A2-style sight tower.