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Questions & Answers
What feed ramps does this barrel have? Manufacturer Answer

This barrel has a "Big Bore" single feed ramp. We recommend using a receiver without M4 feed ramp cuts.

by Faxon Firearms, Manufacturer, August 28, 2025
Customer Reviews
Helpful Negative Review
Chamber out of spec by Auto45, August 20, 2022
Used on my build .458 socom build. Finally got to test it at the range and had failure to chamber. The chamber lower lugs on the feed ramp were gouging into the bullet casing causing it to jam up into the lug corners. The bcg would slam to a stop aga...
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11/11 found this helpful
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Final Stretch of 2025 Begins Now! Special Pricing for Faxon Firearms Products

Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Color: Black Nitride Finish: Nitride Caliber: .458 SOCOM Barrel Length: 10.5 inBarrel Profile: Gunner Gas System Length: Pistol Length Gas Block Journal Size-Diameter: .875 inThreads per Inch: 11/16x24 Barrel Twist Rate: 1-14 Barrel Material: 4150 Chrome Moly Vanadium Flutes: No Gun Make: AR Platform Gun Model: AR-10 Weight: 1.5 lbGas Block Journal Size-Length: 1.9 inGun Type: Rifle

Code: 11I-ATB-GGFR10-15A45814P10NGQ

MPN: 15A45814P10NGQ

UPC: 816341024236

Blazin' Deal
List: $265.00Save 17%
$219.42

Product Info for Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel

Faxon Firearms barrels are the pinnacle of value. Manufactured 100 percent in-house from cradle-to-grave, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into our barrels from the start. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges. Barrel Material: 4150 CMV Barrel Type: Button Rifled Barrel Caliber: 458 Socom Barrel Twist: 1:14 Barrel Length: 10.5" Barrel Profile: Gunner Big Bore Barrel Gas System: Pistol Inside Finish: Nitride Outside Finish: Nitride Muzzle Thread: 11/16x24 Gas Block Diameter: .875 Gas Block Journal Length: 1.1" Magnetic Particle Inspected 11-degree Target Crownimage

WARNING: California`s Proposition 65

Specifications for Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel:

Manufacturer: Faxon Firearms
Color: Black Nitride
Finish: Nitride
Fabric/Material: 4150 Steel
Caliber: .458 SOCOM
Barrel Length: 10.5 in
Barrel Profile: Gunner
Gas System Length: Pistol Length
Gas Block Journal Size-Diameter: .875 in
Threads per Inch: 11/16x24
Barrel Twist Rate: 1-14
Barrel Material: 4150 Chrome Moly Vanadium
Flutes: No
Gun Make: AR Platform
Gun Model: AR-10
Weight: 1.5 lb
Gas Block Journal Size-Length: 1.9 in
Gun Type: Rifle

Features of Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel:

  • Barrel Material: 4150 CMV Steel
  • Barrel Type: Button Rifled
  • Barrel Caliber: 458 Socom
  • Barrel Twist: 1:14
  • Barrel Length: 10.5"
  • Barrel Profile: Gunner Big Bore
  • Barrel Gas System: Pistol
  • Inside Finish: Nitride
  • Outside Finish: Nitride
  • Muzzle Thread: 11/16x24 TPI
  • Gas Block Diameter: .875
  • Gas Block Journal Length: 1.1"
  • Weight:
  • Magnetic Particle Inspected!
  • 11-degree Target Crown

Package Contents:

  • Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel

Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel Orderable Models

List of Orderable Models

  • Faxon Firearms 10.5 inch Gunner Big Bore Profile Barrel, Pistol-Length, .458 Socom, 1-14 Twist, 11/16x24, 4150 Steel, Nitride, Black, 15A45814P10NGQ , MPN: 15A45814P10NGQ , UPC: 816341024236 , Code: 11I-ATB-GGFR10-15A45814P10NGQ
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