Retro AR Front Sight Block for AEGs (Cast - .750 and .625)

Set of FSBs to pair with my retro barrel system, based on old-school Cast FSBs instead of forged. The FSBs have an M3 chamfered hole instead of a slot for a faux gas tube, keeps end cap and fsb together and kills any rattling. Could add if needed HARDWARE: M3 x L 3.00mm x OD 4.5mm Thread Insert M3 x 6.00mm Grub Screw M3 x 20mm Roll Pin - 2pcs AR FSB Parts (Front sight post, detent, spring) M3 x 10mm Screw - if you want to screw end-cap onto fsb

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