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Brenton USA Long-Load AR-15 204 Ruger 17 Rounds Rifle Magazine
$45.99 $43.99 Save $2.00
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Most Helpful Positive Review reliable magazine
This is the third .204 Ruger magazine that I purchased from Optics Planet. The magazine comes installed with a plastic block inside the magazine that limits the magazine capacity to 5 rounds. You need to remove the bottom plate of the magazine to remove this block to make it a 17-round magazine. It’s pretty easy to remove. It’s handy if you live in a state that has magazine restrictions. This magazine is the only one that is specifically made for the .204 Ruger cartridge. Regular 5.56/.223 magazines work, depending on the make of the magazine but I’m trying to stick with magazines that s...
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Purchased from brenton direct

by WildViking, from MT, United States Written on February 18, 2026
Great magazine for 204R. I purchased right from Brenton because OP was out when I was looking. Yea these are 17 rnd mags. You will need to remove the mag block upon receiving your order. And for general information if you read the description of all brenton usa mags it states clearly there is a 5 rnd limiter in them that can be removed. Now back to review. Great product. And definitely like the 2.315 internal dimensions. Standard 204R Max C.O.L is 2.26. I run a custom set up for heavier for caliber bullets and stretch my loads out a bit further for the 1:10 twist. Tho standard 223 mags work sort of the shoulder guide especially on Pmags drags on the longer 204R case. And messes with cycling reliably. So far with Brenton mags after a year and sveral hundred rnds through the mag and tube have had no feed or fitment issues.
Pros:
  • 17 rounds, longer enternal dimensions for diffrent C.O.L
Cons:
  • Have yet to find anything.
Best Used for:
  • Varment and target.
Would recommend: Yes
Was it helpful to you? Yes | No

Nice quality

by Jime, Verified Owner from IA, United States Written on January 3, 2026
Nice quality, well built, needed a stainless steel 20 round mag for my varmint setup.
Would recommend: Yes
Was it helpful to you? Yes | No

READ THIS please

by Bgcntry, Verified Owner from GA, United States Written on December 2, 2025
I wish I had read the reviews before I received these. When I got them they said 5 rd mag.And it was. I was ANGRY, then read review about taking out stop. Much happier and that difficult to do. I do suggest another set of hands for help.
Pros:
  • 17 rds
Cons:
  • After taking the stop out
Would recommend: Yes
Was it helpful to you? Yes | No

remove limiter

by Chris from Cali, from KS, United States Written on May 9, 2025
These mags feature a patented mag block that limits them to five rounds for hunting in restricted states. That limiter can be removed.
Would recommend: Yes
Was it helpful to you? Yes | No

Advertised as 17 rounds, it only holds 5 rounds

by waknstak, Verified Owner from MO, United States Written on January 31, 2025
Advertised as 17 rounds, it only holds 5 rounds
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It does cycle 204 R well
Pros:
  • Cycles Well
Cons:
  • not as advertised
Best Used for:
  • Critters
Would recommend: No
Was it helpful to you? Yes | No
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