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Questions & Answers
can i drop this right on a springfield saint lower off a 556? Expert Answer

Yes. The Black Rain Ordnance SOCOM .458 Complete Upper Receiver can be installed to your Springfield Saint Lower receiver and it will fit and function as intended. You can also use your original 5.56 magazines for .458 SOCOM.

by Ethan, Gear Expert, July 11, 2022
is this a 458 Socom upper or a .458 Win Mag upper Expert Answer

This Black Rain Ordnance SOCOM .458 Complete Upper Receiver is chambered in .458 SOCOM.

by Ethan, Gear Expert, July 11, 2022
Customer Reviews
Helpful Positive Review Buy it already by Will, May 17, 2018
I searched for months trying to figure out what 458 socom part manufacture to go with. I was stuck between Faxon and Tromix. Faxon troubled me because they weren't proven yet. Tromix I simply didnt care for. I then stumbled across this upper and orde...
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15/17 found this helpful
Helpful Positive Review stop complaining by Me, May 25, 2020
to all having issues with any 458 socom feeding and complaining about ammo being expensive to shoot, maybe you should have thought about that before you got into the cartridge and mod you magazine like your supposed to so the ammo will feed correctly...
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7/27 found this helpful
Helpful Positive Review BRO 458 Socom, you won't regret it! by Warpdrive, May 6, 2018
Very light weight skeleton handguard with lots of neat details. This round is awesome and fun to reload. Wide selection of ammo types. Very high quality upper, the muzzle break works very well too. Creates a nice double gas cloud roll.
7/7 found this helpful
Helpful Negative Review Nothing But Trouble Part II by Ironmessiah, Verified Owner, April 16, 2019
I am currently having the exact same problems as Brian with shells not going into battery and having to be mortared out. BUT, just getting to that point has been quite a journey. Out of the box and mounted on an Aero Precision lower, I was getting st...
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22/25 found this helpful
Most Recent Reviews Great Upper ! by Jeff Shelton, Verified Owner, June 26, 2025
Great upper,runs flawlessly on a Bushmaster lower ! The barrel break in steps are a little tedious but what the hey ! Wish ammo was a bit cheaper but you should know that going in ! Finish is perfect,at least on this one,it looks nice! If you’re on t...
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Most Recent Reviews I love this beast by steven c, Verified Owner, April 2, 2025
It is accurate, recoil is not pleasant but its manageable, and it is reliable. All in, for this caliber, this is a great upper. I read negative reviews about these not feeding properly, but I bought a 4 round magazine off this website for it and I ...
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Read All 7 Reviews
Caliber: .458 SOCOM Barrel Length: 16 inMuzzle Device: .458 Muzzle Brake Finish: Anodized Color: Black Condition: New

Code: 2RO-URC-BRO-SPEC15-CU458S-EE

MPN: BRO-CARNIVORE-458S-CU16-BLK

UPC: 707129994059

List: $979.00Save 25%
$729.99

Product Info for Black Rain Ordnance SOCOM .458 Complete Upper Receiver

The Black Rain Ordnance Spec15 Complete Upper Receiver is a high quality solution for your large caliber AR build. These AR15 Upper Receivers by Black Rain Ordnance feature what you need for a performance .458 SOCOM build, including a 16in barrel with 1x14 twist, a bolt carrier group with .458 bolt, a .458 muzzle brake, and more! When you want the best quality for your AR, choose the BRO AR15 Complete Upper Receiver!image

WARNING: California`s Proposition 65

Specifications for Black Rain Ordnance SOCOM .458 Complete Upper Receiver:

Manufacturer: Black Rain Ordnance
Caliber: .458 SOCOM
Barrel Length: 16 in
Muzzle Device: .458 Muzzle Brake
Finish: Anodized
Color: Black
Condition: New
Magazine Included: No

Black Rain Ordnance SOCOM .458 Complete Upper Receiver Includes:

  • 16in 416R stainless steel .458 SOCOM barrel (1x14 twist)
  • Spec15 upper receiver with expanded ejection port
  • .458 SOCOM engraved dust cover
  • Charge handle with oversized Tac-Latch
  • 15in M-LOK hybrid handguard
  • Spec15 bolt carrier group with .458 bolt
  • .458 muzzle brake
  • Metal magazine optimized for .458 SOCOM rounds

Black Rain Ordnance SOCOM .458 Complete Upper Receiver Orderable Models

List of Orderable Models

Black Rain Ordnance Complete Upper .458, Black, BRO-SPEC15-CU458S , MPN: BRO-CARNIVORE-458S-CU16-BLK , UPC: 707129994059 , Code: 2RO-URC-BRO-SPEC15-CU458S-EE

Black Rain Ordnance SOCOM .458 Complete Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

USED, Black Rain Ordnance Complete Upper .458, Black, BRO-SPEC15-CU458S , MPN: BRO-CARNIVORE-458S-CU16-BLK-EDEMO , Code: 2RO-URC-BRO-SPEC15-CU458S-EE-EDEMO-DF-F
DEMO, Black Rain Ordnance Complete Upper .458, Black, BRO-SPEC15-CU458S , MPN: BRO-SPEC15-CU458S-DEMO , Code: 2RO-URC-BRO-SPEC15-CU458S-DEMO
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