Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Does this barrel come with the ability to pin your gas block. Or need to be done aftermarket?

needs to be done aftermarket. does not include a pinned gas block

by TJ, Verified Owner, June 27, 2022
Carbine gas tube length correct? as it is an M4 profile. Expert Answer

Yes, this is carbine length.

by Nick B., Gear Expert, October 19, 2021
Caliber: .223 Remington , 5.56x45mm NATO Barrel Length: 14.5 inCondition: New

Code: 57D-ATB-36420-EE

MPN: 36420

UPC: 845737005115

List: $399.00Save 13%
$349.00

Product Info for FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420

The FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 is a great way to make sure you have a top of the line barrel that will not let you down when you need it most. Manufactured with a Chrome Lined Chamber and Bore, FN America AR-15 Hammer Forged Barrel is designed to handle full-auto, hammer forged barrel with a 1/2 x 28 Inch threaded muzzle and a CMV steel lining to ensure maximum accuracy. This FN America AR-15 Barrel features a one-piece chrome lined design and a hammer forged barrel allowing for greater strength and a tighter tolerance control between bore and chamber. The FN America 14.5 Inch Hammer Forged Barrel has an MP tested that ensures each barrel is free of microstresses and/or cracks.image

Specifications for FNH USA AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420:

Mfg Item Num:  36420
Type:  BARRELS - RIFLE
Barrel Length:  14.5
Caliber:  5.56mm NATO
Caliber-Gauge:  .223 REM.
Master Model Header:  AR-15 Hammer Forged Barrel

FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 Orderable Models

List of Orderable Models

  • FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply , MPN: 36420 , UPC: 845737005115 , Code: 57D-ATB-36420-EE

FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply , MPN: 36420-DEMO , Code: 57D-ATB-36420-DEMO
Compare (0)