Springfield Armory M14 Castle Nut (MA0312) – Precision Engineered Replacement Part

Product Overview

The Springfield Armory M14 Castle Nut (MA0312) is a meticulously machined component designed to restore the reliability and performance of the legendary M14 rifle. Crafted from high‑grade cast steel, this nut delivers exceptional durability, corrosion resistance, and a perfect fit for both vintage collectors and modern shooters.

Key Features & Benefits

Exact OEM Specification: Engineered to match original factory tolerances for a seamless installation.
Premium Cast Steel Construction: Provides superior strength and resistance to wear, ensuring long‑term service life.
Corrosion‑Resistant Finish: Protective coating guards against rust and environmental damage.
Easy Installation: Thread design optimized for quick, tool‑free fitting on standard M14 receivers.
Enhanced Stability: Securely locks the bolt carrier group, reducing unwanted movement and improving shot accuracy.
Compatible with All M14 Variants: Works with original production models, civilian semi‑auto conversions, and military surplus rifles.

Technical Specifications

Manufacturer	Springfield Armory
Part Number	MA0312
UPC	706397857776
Material	High‑grade cast steel
Finish	Corrosion‑resistant coating
Thread Size	Standard M14 Castle Nut thread
Weight	Approximately 0.12 lb (55 g)
Dimensions	Height: 0.75 in (19 mm) \| Diameter: 0.44 in (11 mm)
Compatibility	All Springfield M14 rifles and compatible M14 platforms

Why Choose Springfield Armory?

For over a century, Springfield Armory has been synonymous with American firearm excellence. Every component, including the M14 Castle Nut, is produced under strict quality‑control standards to meet the expectations of military professionals, law‑enforcement personnel, and civilian enthusiasts alike.

Installation Tips

Ensure the rifle is unloaded and the bolt is fully retracted.
Locate the existing castle nut housing on the receiver.
Align the new MA0312 nut with the threads and apply gentle pressure while turning clockwise.
Secure the nut until it is snug; avoid over‑tightening to prevent thread damage.
Perform a function check to confirm smooth bolt carrier operation.

For best results, use a quality torque wrench set to the manufacturer‑recommended specifications.

Customer Reviews

"The replacement nut fits perfectly and restores the M14’s classic feel. Springfield never disappoints!" – John D., Firearms Enthusiast

"Durable and corrosion‑free even after extensive field use. Highly recommended for any M14 owner." – Maria L., Competitive Shooter

The End

Category	Parts
SubCategory	Rifle Parts
Manufacturer	Springfield Armory

Springfield Armory M14 CASTLE NUT MA0312