+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

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 FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 Caliber: .223 Remington, 5.56x45mm NATO, 12% Off w/ Free S&H

FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply
FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply
1 of 1 images
FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
(58)
List: $24.99 $12.99 Save Up to 48%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
(35)
List: $30.36 $14.99 Save Up to 51%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
(52)
List: $32.43 $17.99 Save Up to 45%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(52)
List: $32.43 $18.99 Save Up to 41%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
(25)
List: $30.79 $21.49 Save Up to 30%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(35)
List: $29.95 $14.99 Save Up to 50%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
(12)
List: $42.33 $27.99 Save Up to 34%
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
(13)
List: $31.04 $15.99 Save Up to 48%
Best Rated Strike Industries AR-15 .223 Remington/5.56 NATO Rifle Magazine, 33 Round, Smoke Gray, 1 Pack, Polymer, Smoke, 0, SI-AR-MAG-33RD
Strike Industries AR-15 .223 Remington/5.56 NATO Rifle Magazine, 33 Round, Smoke Gray, 1 Pack, Polymer, Smoke, 0, SI-AR-MAG-33RD
(11)
List: $35.25 $17.99 Save Up to 49%
Best Rated PMC Ammunition 556K X-Tac, 5.56x45mm NATO, 62 grain, Light Armor Piercing, Brass, Centerfire Rifle Ammo, 20, 5.56
PMC Ammunition 556K X-Tac, 5.56x45mm NATO, 62 grain, Light Armor Piercing, Brass, Centerfire Rifle Ammo, 20, 5.56
(113)
List: $14.99 $11.89 Save Up to 21%
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
View All Q&A You Have a Question? Ask!
Caliber:
.223 Remington, 5.56x45mm NATO
Barrel Length:
14.5 in
Condition:
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)
1 item has been added
Add at least two items to compare
Last updated 2026-07-02 UTC.