The Springfield Armory M1A Castle Nut Set Screw (brand part no. MA0513) is a standalone replacement fastener built for the M1A platform.

Key Specifications

• Built for the M1A platform.
• Functions as the castle nut set screw, securing the castle nut in position.
• Sold as a standalone replacement part.
• Sold under Springfield Armory’s M1A parts line.
• A small fastener, sold individually rather than as part of a kit.

Frequently Asked Questions

What does this fit? It is built for the M1A platform.

What does a castle nut set screw do? It secures the castle nut in position so it does not back off under recoil.

Buy the Springfield Armory M1A Castle Nut Set Screw

Replace the castle nut set screw on an M1A build. Browse more of our rifle parts selection. Order the Springfield Armory M1A Castle Nut Set Screw today for fast, insured shipping from a Lubbock, TX gun shop.