M1 Garand National Match Rear Sight Base NM/2A for Hooded Apertures fits M14 M1A - NewNational Match Rear Sight Base for M1 Garand M14 M1A . These are New production parts and marked NM/2A for use with Hooded NM Rear Sight Apertures. Standard non-hooded NM Apertures can also be used with these bases. Bases are threaded for 1/2 MOA adjustment so you must use with appropriate 1/2 MOA threaded NM Windage Knobs. Sold individually so select quantity desired when adding to cart.