The ProMag Enfield No. 4 Mk I magazine is a detachable 10‑round replacement designed for Enfield #4 Mk I (SMLE) rifles chambered in .303 British. The magazine body is constructed of heat‑treated blued steel and uses a chrome‑silicon wire spring to promote reliable feeding and function. It serves as a practical spare or replacement for owners of historic service rifles and those who maintain period-correct field equipment. Made in the U.S.A.
Key Specifications
- Holds 10 rounds.
- Chambered for .303 British.
- Constructed from steel.
- Finished in blued.
- Designed to fit Enfield #4 Mk I rifles.
- Intended application centerfire rifle.
- Action type Bolt Action.
- Uses a chrome-silicon wire spring to promote reliable feeding.
- Overall dimension 1.40 X 5.05 X 5.50.
- Weight 0.3.
Durable and straightforward in design, this magazine provides a functional, historically compatible option for Enfield No.4 Mk I owners who need a dependable spare for range use or field maintenance. Its simple, serviceable construction keeps maintenance minimal while preserving the rifle’s original handling and appearance.





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