20″ 1-8 1/2 Fractional Twist Bull Barrel™ Complete Upper Barrel Assembly

$504.95

20″ 1-8 1/2 Fractional Twist Bull Barrel™ Complete Upper Barrel Receiver Assembly

This 20″ 1-8 1/2 Fractional Twist Bull Barrel™ complete upper receiver assembly is the perfect choice for precision shooting with a wide variety of ammunition. The heavy barrel profile provides adds strength for stability, reducing recoil and increasing accuracy. The barrel is made of high-quality stainless steel, providing durability and longevity. The 1-8 1/2 twist rate is suitable for stabilizing a wide variety of projectiles. This is an excellent option for shooters who want a bull barrel with precision shooting in mind.

Starts with our 20″, .223 caliber bull barrel made from 416 SST with a 1-8 1/2 fractional twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with our lo-profile gas system and our ergonomic  15″ Palm Handguard® with KeyMod or M-LOK® slots and a Picatinny top-rail.

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Description

20″ 1-8 1/2 Fractional Twist Bull Barrel™ Complete Upper Barrel Receiver Assembly

This 20″ 1-8 1/2 Fractional Twist Bull Barrel™ complete upper receiver assembly is the perfect choice for precision shooting with a wide variety of ammunition. The bull barrel profile provides adds strength for stability, reducing recoil and increasing accuracy. The barrel is made of high-quality stainless steel, providing durability and longevity. The 1-8 1/2 twist rate is suitable for stabilizing a wide variety of projectiles. This is an excellent option for shooters who want a bull barrel with precision shooting in mind.

Starts with our 20″, .223 caliber bull barrel made from 416 SST with a 1-8 1/2 fractional twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with our lo-profile gas system and our ergonomic  15″ Palm Handguard® with KeyMod or M-LOK® slots and a Picatinny top-rail.

  • Length: 20″
  • Bull Barrel  416 SST
  • Threaded Barrel — Thread Pitch 1/2 x 28
  • Gas Block Diameter .936
  • Gas Port Diameter: .097″ – .098″
  • 1-8 1/2 RH fractional Twist
  • 6 Lands and Grooves
  • M4 Feed Ramp
  • Button Broached

Includes:

  • HG-V-15K – Palm Handguard® – Vented 15″ KeyMod or M-LOK® Slots with Barrel Nut
  • BL-B20-85 – 20″ 1-8 1/2 Fractional Twist Bull Barrel™, Threaded 416 SST
  • FTT-EA1 – A3 Upper Receiver Assembled
  • BC-A-223 – Fully Assembled Bolt Carrier – .223
  • BL-04 – Rifle Length Gas Tube
  • GB-LP936 – Gas Block .936
  • 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:

  • 20″ 1-8 1/2 Fractional Twist Bull Barrel™
  • 1-8 1/2 Fractional RH Barrel Twist
  • .223 Rem
  • 416 SS
  • Threaded Barrel — Thread Pitch 1/2 x 28
  • Gas Block Diameter .936
  • Gas Tube Length — Rifle
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached

SKU: BA-B20-85 – Keymod

SKU: BA-B20-85-M – MLOK®

 

Additional information

Application

AR15

Caliber

.223 Rem

Material

Stainless Steel

Threaded

Yes

Thread Pitch

1/2 x 28

Twist

1-8 1/2

Lands and Grooves

6

Gas Block Required

.936 Diameter

Slot Style

KeyMod, MLOK™

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