Geissele Maritime AR-15 Bolt Catch

The Geissele Maritime Bolt Catch fits any lower receiver made to accept a mil-spec M16/M4 bolt catch. The larger, extended paddles make it easier to lock the bolt back or drop it after a magazine change, and aggressive checkering gives positive feel with gloves or in the dark.

Left handed shooters can work it with the trigger finger without breaking their grip. It is made from heat treated steel with a manganese phosphate finish as an enhanced mil-spec replacement. The bolt catch spring, plunger and roll pin are not included; reuse the ones from your current bolt catch. The extended paddle partly covers the hammer pin hole, so push the hammer pin out from the left with a small punch and install it from the right. Fit on billet lowers is not confirmed.