How to Choose the Right Replacement Rifle Magazine
Buying a replacement rifle magazine comes down to five questions, answered in order. Get them right and the magazine drops in and feeds like the original. Get one wrong — usually the fit — and you're mailing it back. This guide walks you through the exact decision, from brand and model to capacity and finish.
Quick answer
Choose a replacement magazine in this order: 1) your rifle's make and model, 2) the caliber marked on the barrel, 3) the action or magazine pattern that matches, 4) the capacity you want, and 5) the finish. Fit is decided by the first three — get those right first.
What's in this guide
- Step 1: Identify your rifle
- Step 2: Confirm the caliber
- Step 3: Match the pattern or action
- Step 4: Choose capacity
- Step 5: Choose finish
- Frequently asked questions
Step 1: Identify your rifle's make and model
The model number is stamped on the barrel or receiver. This is the single most important piece of information, because magazines are cut to fit specific models. A Marlin needs a Marlin magazine; a Remington 783 needs a 783 magazine — and within each brand, the exact model narrows it further. Start at the Marlin or Remington guide to find your model, or see Marlin vs Remington if you're deciding between brands.
Step 2: Confirm the caliber
Read the caliber off the barrel. It matters because caliber families don't share magazines:
- .22 LR is separate from .22 WMR / .17 HMR — the magnum case is larger. See .22 WMR vs .17 HMR.
- On centerfire rifles, caliber tells you the action length — see step 3.
Step 3: Match the pattern or action length
This is where most mistakes happen. Two magazines with the same caliber and capacity can still be different patterns:
- Marlin .22 LR: classic 780/80/20/25 bolt guns use the 71903; later models like the 795 use the 71900/71901. Full breakdown in 71900 vs 71903.
- Remington 783: the caliber decides short vs long action. See short action vs long action.
Step 4: Choose your capacity
Once fit is settled, pick how many rounds you want. Standard factory counts (like 4 rounds on a 783 or 7 on many Marlins) keep a flush, low profile for hunting. Extended options — such as the 8-round 783 XT — trade a flush fit for fewer reloads. Match capacity to how you shoot.
Step 5: Choose your finish
Finally, pick a finish. Black oxide is the classic, low-glare default; nickel is brighter and more corrosion-resistant. It's purely looks and durability — feeding is identical. Full comparison in black oxide vs nickel.
Key takeaways
- Decide in order: model → caliber → pattern/action → capacity → finish.
- Fit is set by the first three — never buy on caliber and capacity alone.
- Prefer OEM-pattern, factory-spec magazines over generic ones.
- Unsure at any step? Contact us with your model and caliber.
Frequently asked questions
How do I know which magazine fits my rifle?
Start with your rifle's model and caliber, then match the correct magazine pattern or action length. Fit is determined by those three factors — not by caliber and capacity alone.
Can I use any magazine with the right caliber and capacity?
No. Two magazines can share caliber and capacity but be built to different patterns. The magazine has to match your specific model or action, or it won't feed reliably.
Does capacity affect fit?
No. Capacity is a preference — a standard flush magazine or an extended one both fit the same rifle, as long as the pattern is correct.
Should I buy OEM or aftermarket?
Buy a factory-pattern magazine built to the rifle's exact spec. Generic aftermarket magazines are the ones that tend to cause fit and feeding problems.
Ready to find yours?
Jump to your brand: the Marlin Magazine Guide or the Remington 783 Magazine Guide. Or browse all Marlin and all Remington magazines.
About the author. Rob Haversat is the founder of American Rifle Magazines in Naugatuck, Connecticut, which manufactures OEM-pattern replacement magazines for Marlin and Remington rifles in the USA.