.458 SOCOM 10 Round Magazine
Caliber: .458 Socom
Capacity: 10 Rounds
Color: Black
Fits: AR-15 chambered in .458 SOCOM (or .50 Beowulf)
Material: USGI Aluminum magazine body, Stainless Steel Spring, Polymer Anti Tilt Follower
Follower: Calegalmags green .458 follower
Laser engraved markings on the magazine body for identification:
.458 SOCOM
10 ROUNDS
These magazines are manufactured by Calegalmags as 10 round magazines with our proprietary .458 SOCOM (USGI) green followers. The follower is purposefully designed to work with big bore rounds only. Smaller caliber ammunition is immediately ejected and can not be retained inside the magazine due to the follower design. Minor modification to the magazine body may be required for some end users due to feed ramp and/or projectile tolerances.
Optional Upgrades (subject to availability / photos for images)
-Install Magpul Ranger Plate (rubber pull tab aids in pulling mags out of pouches). Replaces the usgi metal floorplate.
-Install Magpul L Plate (rubber bumper that shields from impact). Replaces the usgi metal floorplate.


Minh P. (verified owner) –
Fit and finish is great. Optional L Plate upgrade is a nice touch. In total I bought 11 of these and I am very happy with them.
Jan Janigian (verified owner) –
The top edges are a bit rough on larger rounds when squeezing in rounds 8-10. Just go easy. Otherwise they cycle and feed just fine.
Steve (verified owner) –
These mags are excellent quallty. Have been quite reliable in all the .458 rifles we’ve used them with.
Benjamin L. (verified owner) –
Very well built and nice clean look
David A (verified owner) –
Ordered five magazines. Four of the five were 100%. One of the five only accepted nine rounds. Quality control issue, more than likely. Nice construction and nice label on the magazine.
Daniel C (verified owner) –
Well made, anti tilt follower, durable. Cheaper than buying an AR-15 223 magazine and converting it to 458 SoCom.
Mike (verified owner) –
Great mag for my big bore, no feeding issues nice follower light weight
JB (verified owner) –
I’m sure these mags work great if your using 458 socom. I bought them to use in my 50 beowulf. The best that I could use was 7 rds, anymore they would stick up to high and cause a jam. My son tried to use them for his 450 Bushmaster and had the same problem. For now will use them with 7 rds.
Chuck (verified owner) –
Great product with great service and fast shipping. Finish and functiona are excellent I have several magazines and would recommend these for any serious 458 shooter.
Crispin (verified owner) –
Perfect fit! Excellent!
Elijah S. (verified owner) –
I bought two of the .458 socom 10 round mags with ranger plates. Mags are engraved with “10 round .458 socom” on the side, which is nice. Mags did not have a divet cut on the front end typical of socom mags. This cut prevents the large stepped case from catching on the front lip of the mag while feeding. I used a Dremel to match them up to the same cut on my bear creek mag and everything runs fine.