A Legendary caliber deserves a legendary magazine and the 400 Legend Duramag SS delivers the only purpose built magazine for this caliber. With these Duramag SS mags you’re getting 400 Legend specific rib geometry which is crucial to reliable feeding and cartridge stack internally. These magazines are also marked with 400 Legend on the body and the follower to help with quick identification.
The 400 Legend DURAMAG SS™ is an AR-15 pattern magazine designed for serious shooters who require the most out of their magazines. Constructed from premium 410 Stainless Steel and built with advanced interior and exterior geometries to ensure ultimate reliability and feeding. These magazines utilize our T-360™ coating to ensure incredible performance and product longevity through the harshest conditions. The 400 Legend magazines are available in 5rd and 10rd capacities and safe for extended storage while loaded. DURAMAG™ will not flex or swell like polymer due to storing while loaded or environmental / temperature changes. When performance and durability are paramount, make the switch to DURAMAG SS™ and never look back.
Available in 5rd and 10rd capacities with more options on the way.
This mag only holds 4 rounds yet is over 6" long. 4 rounds could fit flush with the bottom of the gun easy. This is somewhat Ruger's fault too. The mag is steel with steel parts so it's noisy when shaken. It works fine but is way too large!
5
magazine
Posted by Joseph Lewis on 1st Nov 2024
Great product. Bought as a spare for my new Ruger rifle and its the factory mag included with it.
3
400 Legend Mag
Posted by Alan Kupari on 7th Oct 2024
Could only get 4 rounds into the mag , that would fit into the AR's lower.5th round would fit tight in the mag and scratch up the caseing.
4
400 Legend 5 round mag
Posted by Kory B on 7th Oct 2024
No problems with functioning or feeding with 4 rounds in the mag but when I load 5 rounds it’s to tight, it won’t seat in the gun with the bolt closed. Just a little Dremel work and works fine.
5
400 Legend Mag
Posted by Keith on 27th Mar 2024
Perfect fit!!! This is exactly what I needed for my 400 Legend AR build!!!
5
400 legend
Posted by Shawn on 16th Mar 2024
So glad that there is now a dedicated magazine for the caliber of 400 legend, I have been modifying mags, to make due till these came available
5
AR15 400L magazine
Posted by Kevin Hennig on 15th Mar 2024
Functions as designed.
5
.400 Legend Mags
Posted by Jesse on 14th Mar 2024
Worth the wait! These are turn key and accepted the round w/no mods and cycled perfectly! Great job Justus and Team!
A Legendary caliber deserves a legendary magazine and the 400 Legend Duramag SS delivers the only purpose built magazine for this caliber. With these Duramag SS mags you’re getting 400 Legend specific rib geometry which is crucial to reliable feeding and cartridge stack internally. These magazines are also marked with 400 Legend on the body and the follower to help with quick identification.
The 400 Legend DURAMAG SS™ is an AR-15 pattern magazine designed for serious shooters who require the most out of their magazines. Constructed from premium 410 Stainless Steel and built with advanced interior and exterior geometries to ensure ultimate reliability and feeding. These magazines utilize our T-360™ coating to ensure incredible performance and product longevity through the harshest conditions. The 400 Legend magazines are available in 5rd and 10rd capacities and safe for extended storage while loaded. DURAMAG™ will not flex or swell like polymer due to storing while loaded or environmental / temperature changes. When performance and durability are paramount, make the switch to DURAMAG SS™ and never look back.
Available in 5rd and 10rd capacities with more options on the way.
This mag only holds 4 rounds yet is over 6" long. 4 rounds could fit flush with the bottom of the gun easy. This is somewhat Ruger's fault too. The mag is steel with steel parts so it's noisy when shaken. It works fine but is way too large!
5
magazine
Posted by Joseph Lewis on 1st Nov 2024
Great product. Bought as a spare for my new Ruger rifle and its the factory mag included with it.
3
400 Legend Mag
Posted by Alan Kupari on 7th Oct 2024
Could only get 4 rounds into the mag , that would fit into the AR's lower.5th round would fit tight in the mag and scratch up the caseing.
4
400 Legend 5 round mag
Posted by Kory B on 7th Oct 2024
No problems with functioning or feeding with 4 rounds in the mag but when I load 5 rounds it’s to tight, it won’t seat in the gun with the bolt closed. Just a little Dremel work and works fine.
5
400 Legend Mag
Posted by Keith on 27th Mar 2024
Perfect fit!!! This is exactly what I needed for my 400 Legend AR build!!!
5
400 legend
Posted by Shawn on 16th Mar 2024
So glad that there is now a dedicated magazine for the caliber of 400 legend, I have been modifying mags, to make due till these came available
5
AR15 400L magazine
Posted by Kevin Hennig on 15th Mar 2024
Functions as designed.
5
.400 Legend Mags
Posted by Jesse on 14th Mar 2024
Worth the wait! These are turn key and accepted the round w/no mods and cycled perfectly! Great job Justus and Team!