11.5” Government Profile Barrel Assy w/ F marked FSB and 2 pc Handguard 1-7 Twist


11.5” Government profile Barrel Assy w/F marked FSB and 2 pc Handguard 1-7 Twist

The 11.5” government profile barrel assembly is a versatile option for your next build. It features a 1-7 twist rate, optimized for stabilizing a wide range of bullet weights. The assembly comes with an F marked front sight base and a 2-piece handguard, making it easy to install and use. The barrel is made of high-quality 4150 steel, ensuring durability and longevity. The government profile gives this assembly a sleek and classic look, making it suitable for both recreational and professional use. This is an excellent option for shooters who want a classic look with modern performance.


Starts with our 11.5″ barrel with F Marked Front Sight Base, 5.56 barrel made from 4150 CMV with a 1-7″ twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and ejection port cover.

*Disclaimer: These parts are replacement parts for existing and legally owned NFA firearms. Installing a barrel under the legal length may constitute a violation of Federal or State law. All NFA requirements must be followed.

Out of stock

Want to be notified when this product is back in stock?

Free shipping on orders over $175.00! (*Retail Orders Only)

  • Check Mark Made in America
  • Check Mark Secure Checkout
  • Visa Card
  • MasterCard
  • American Express
  • Discover Card
SKU: BA-F11-7 Categories: , , Tag:


11.5” Government Profile Barrel Assy w/F marked/FSB and 2 pc Handguard 1-7 Twist


  • HG-A2 2-Piece CAR style Handguard
  • BL-F11-7 – 11.5″ Government Profile Barrel w/F marked/FSB 1-7 Twist
  • FTT-EA1 – A3 Upper Receiver Assembled
  • BC-A-223 – Fully Assembled Bolt Carrier – 5.56mm
  • BL-04A – Carbine Gas Tube
  • BL-750F  F Marked Front Sight Base
  • UR-19 — Charging Handle
  • BL-06-A2 — A2 Flash Hider

Upper Specs:

  • 7075-T6 Forging
  • Hard coat anodize Black

Bolt Specs:

  • Bolt: Carpenter 158 steel
  • Extractor: 4140 Alloy steel
  • Army Spec Heat Treatment
  • Manganese Phosphate

Bolt Carrier Specs:

  • Carrier: 8620 steel
  • Cam pin: 4340 Alloy steel
  • Carrier key: 4130 Alloy steel
  • Army Spec Heat Treatment
  • Manganese Phosphate

Barrel Specs:

Government profile 11.5″ w/F marked FSB Barrel

  • Available in 11.5″
  • 5.56 mm
  • 4150 CMV (not chrome lined)
  • Threaded Barrel — Thread Pitch 1/2 x 28
  • Gas Journal Diameter .750
  • Gas Tube Length — Carbine
  • 1-7 RH Barrel Twist
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached
  • Not chrome lined

SKU: BA-F11-7

Additional information






A3 Flattop

Feed Ramp


Lands and Grooves


Thread Pitch

1/2 x 28




4150 CMV



UPC Code



There are no reviews yet.

Be the first to review “11.5” Government Profile Barrel Assy w/ F marked FSB and 2 pc Handguard 1-7 Twist”