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Questions & Answers
Will this Mag also work with Bushmaster .450 rounds and if so, how many rounds will it hold? How many .458 SOCOM rounds will the magazine hold?

I doubt it, I got one for my 50 beowulf and when loaded full, the feed lips at the top start to bend out and the 50 rounds start to get moved in an upward direction instead of straight. Didnt even bother trying it in the gun

by Camerondono, Verified Owner, January 9, 2026
Customer Reviews
Helpful Negative Review
This magazine does not cycle 50 beowulf ammo. The description says it's for a 50 beowulf.
2/3 found this helpful
Most Recent Reviews
Very disappointed by Nada, Verified Owner, December 26, 2025
Was not impressed with this mag. It’s super cheap feeling. If I drop it I’m afraid it will shatter. Loaded it with 20 rounds and it will not lock in to any of my rifles unless the chamber is open or I remove the last round.
Most Recent Reviews
Works with 375 SOCOM by Phillip Ferris, Verified Owner, October 26, 2025
I've been having a lot of trouble finding a .375 SOCOM magazine and here we are. It feeds properly and doesn't prohibit cycling. Only problem with it is that it only holds 7 rounds of 458 or 375 SOCOM.
Most Recent Reviews
Great quality very light by Diesel, Verified Owner, June 4, 2025
Shoots great 300 blackout and 5.66. Lots of grip texture to it and is very light,seems like quality build
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Great quality good color match by Diesel, Verified Owner, May 28, 2025
Great built , cycles perfect 300 blackout suppressed and 5.56 supersonic, od green is great color match to . texture is very grippy
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No problems here! by Msrk, Verified Owner, April 7, 2025
Solid build, no problems feeding, grip is good and color is universal to other FDE products! Would recommend!
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Certain firearm magazines and extensions are subject to maximum capacity restrictions based on state and local laws. Currently, we are unable to sell these products to some locations. For a complete list of these restrictions, please visit our policy page.

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Product Info for Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine

The HEXMAG 20 round SHORTY magazine with a lower profile for bench or bi-pod shooting is ideal for any sport, competitor or tactical shooters demanding superior strength, proven reliability and exceptional performance. Featuring the proprietary Carbon Fiber Composite, and Patented HEXTURE design for better grip, other features include; redesigned feed lip geometry to maximize strength and versatility, stripper clip guides for faster reloading, deep catch pocket for rock solid stability and a heat-treated stainless-steel spring for extended storage periods.This AR15 magazine also features the HEXMAG patented Tool-Less Design for fast and easy floorplate removal allowing field cleaning and HEXID color customization, incorporates the industry's most popular and functional accessories including HEXMAG Grip Tape and HEXMAG HEXID Color Ammunition Identification System.image

Specifications for Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine:

Manufacturer: Hexmag
Magazine Body Material: Polymer
Fabric/Material: Polymer
Magazine Capacity: 20 Round
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Quantity: 1

Features of Hexmag AR-15/M4/M16 .223/ .300AAC Blackout/ .458 SOCOM/ .50 Beowulf 20 Round Shorty Magazine

  • Strong and resilient Polymer Body
  • Stainless Steel Spring
  • Hexture Texture for superior grip
  • HexID identification system

Package Contents:

  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine

Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine Orderable Models

List of Orderable Models

  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Carbon Fiber, 20, HX20-AR15-CFC , MPN: HX20-AR15-CFC , UPC: 850065662381 , Code: 2A7-RM-AR20R-HX20-AR15-CFC-20RD
  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, FDE, 20, HX20-AR15S2-FDE , MPN: HX20-AR15S2-FDE , UPC: 850065662336 , Code: 2A7-RM-AR20R-HX20-AR15S2-FDE-20RD
  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Black, 20, HX20-AR15S2-BLK , MPN: HX20-AR15S2-BLK , UPC: 850065662329 , Code: 2A7-RM-AR20R-HX20-AR15S2-BLK-20RD
  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Olive Drab, 20, HX20-AR15S2-ODG , MPN: HX20-AR15S2-ODG , UPC: 850065662350 , Code: 2A7-RM-AR20R-HX20-AR15S2-ODG-20RD
  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Clear, 20, HX20-AR15S2-CLR , MPN: HX20-AR15S2-CLR , UPC: 850065662527 , Code: 2A7-RM-AR20R-HX20-AR15S2-CLR-20RD
  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Smoke, 20, HX20-AR15S2-SMK , MPN: HX20-AR15S2-SMK , UPC: 850065662534 , Code: 2A7-RM-AR20R-HX20-AR15S2-SMK-20RD

Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine Unavailable & Discontinued Models

List of Unorderable Models

  • Hexmag AR-15 .223/.300AAC/.458 SOCOM/.50 Beowulf 20 Round Shorty Magazine, Grey, 20, HX20-AR15S2-GRY , MPN: HX20-AR15S2-GRY , UPC: 850065662343 , Code: 2A7-RM-AR20R-HX20-AR15S2-GRY-20RD
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