BSA No.4 Mk I Sporter .303 British Bolt-Action Rifle – 1942 Production, 21.5" Barrel, 10+1 Capacity
Built by Birmingham Small Arms in 1942, this No.4 Mk I has been sporterized for field use while retaining its wartime heritage. Chambered in .303 British with a 21.5-inch barrel and a detachable 10-round magazine, it offers classic Enfield action in a handier hunting configuration. Receiver drill-and-tap work accommodates modern optics, and the hardwood sporter stock keeps weight and length manageable without sacrificing the rifle’s rugged character.
Condition
Overall Condition: Fair – extensive signs of prior use and handling.
Bore Condition: Fair – generally clean with some residue and slight corrosion; rifling is worn with some loss of definition.
The metal surfaces and hardwood stock display moderate scratching, scuffing, and blemishing. The receiver has several drilled and tapped holes from previous optic installations.
What’s Included
- BSA No.4 Mk I Sporter bolt-action rifle
- One 10-round detachable magazine
This rifle began life as a World War II-era No.4 Mk I produced by BSA, giving it authentic 1942 British military provenance. The original full-length furniture has been replaced with a hardwood sporter stock, reducing overall weight and improving handling for hunting or field carry.
A 21.5-inch barrel balances maneuverability with the velocity benefits of .303 British. The standard Enfield bolt action remains intact, delivering the smooth cycling and robust extraction the design is known for.
Capacity is 10+1 rounds via the included detachable magazine, allowing quick topping-off and sustained shooting without frequent reloads.
The receiver has been professionally drilled and tapped in multiple positions, providing flexibility for mounting modern scope bases or rings to suit the shooter’s preference.
With its wartime production date, reliable action, and field-ready sporter profile, this BSA No.4 Mk I offers a blend of historical interest and practical utility.