Looking for an early PRI set screw gas block/flip-up front sight (for milled flats, not crossbolt model) WITH round sight pin - NOT square sight pin.
This would be one of the first generation of the PRI flip-up gas blocks for early MK12 Mod 0s. Later retro models have a square sight pin. According to PRI, the round sight pin was the only think they didn't replicate.
This would be one of the first generation of the PRI flip-up gas blocks for early MK12 Mod 0s. Later retro models have a square sight pin. According to PRI, the round sight pin was the only think they didn't replicate.
