ProMag Enfield 4-MK I Magazine .303 cal Blued Steel 10/rd
$21.44
Enhance your Enfield #4-Mk I (SMLE) rifle with the ProMag Enfield 4-MK I Magazine, delivering reliable performance with a 10-round capacity in .303 British. Crafted from heat-treated blued steel and featuring a durable chrome-silicon wire spring, this magazine ensures consistent feeding and function for your shooting needs. Proudly made in the U.S.A., it’s a must-have for serious collectors and shooters alike.
Out of stock
A 10-rd Magazine for Enfield #4-Mk I (SMLE) rifles chambered in .303British. Magazine body and follower constructed of heat treated blued-steel with a Chrome-silicon wire spring to ensure reliable feeding and function. Made in the U.S.A.
| Weight | 0.300 lbs |
|---|---|
| Dimensions | 8.900 × 4.500 × 2.000 in |
| Manufacturer | ProMag Industries |
| Capacity | 10 |
| Finish | Blued |
| Frame Material | Steel |
| Caliber | .303 British |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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