Fits and works with
- Caliber
- .458 SOCOM · Shop matching ammo
- Bolt
- .458 SOCOM / .450 Bushmaster · Bolt carrier groups
Specifications
- Manufacturer
- CMT
- Platform
- AR-15
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| AR15Discounts Best price 5% off | $131.00checked Nov 13, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $131.00checked Nov 13, 2026 | Check store | Buy at Dirty Bird | |
| Brownells 17.76% off · ends Nov 15 · exclusions apply | $115.99checked Nov 13, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $131.00 | $131.00 | $131.00 |
| Brownells | $115.99 | $115.99 | $115.99 |
| Dirty Bird | $131.00 | $131.00 | $131.00 |
Since Sep 27, 2026.
About this part
The AR-15/M16 Billet Upper Receiver, .458 Socom is a .458 SOCOM upper receiver from CMT. It's sold by 3 stores, from $115.99 to $131.00.
From the manufacturer
Enlarged Ejection Port Accommodates .458 SOCOM
Stripped billet upper drops onto standard lower and features expanded ejection port that accommodates .458 SOCOM and other big-bore AR-15 calibers. Integral Picatinny rail provides mounting space, and slick-side design does not require forward assist or ejection port cover, simplifying the build. Has M4 feed ramps, and accepts standard bolt carrier, charging handle and barrel nut, sold separately.
AR-15, Issue:11, Page:001
Big Book Catalog, Issue:70, Page:002
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