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AR-15 20" Heavy Barrel, 6.5 Grendel Type 2, 1:8 5R, Stainless Steel

Availability: In Stock (Only 5 left!)

  |  Item #: ACC-B6.5RHB20185R-SS-12
MPN: B6.5RHB20185R(SS)
 

Specifications

Product Specs Length 20
Profile Heavy
Twist 1:8 5R
Finish Stainless
Material 416 Stainless Stee
Thread Pitch 5/8x24
Caliber 6.5 Grendel Type 2
Feed Ramp M4
Flutes none
Gas System Rifle Length
Gas Block System 0.750
Gas Hole Diameter 0.086
Charging Style No
Country of Manufacture United States
License Requirement None
Manufacturer US Contractor
Mfg. Part Number B6.5RHB20185R(SS)
UPC No
Caliber/Gauge 6.5 Grendel
Action No
Barrel Length 20
Barrel Twist 1:8 5R
Barrel Bore Type No
Barrel Finish Stainless
Barrel Fluting None
Barrel Profile Heavy
Mount Type No
Beam Color No
Firearm Fit No
Threaded Barrel No
Condition New
Free Shipping No
Weight 2.45 Lbs

AR-15 20" Heavy Barrel, 6.5 Grendel Type 2, 1:8 5R, Stainless Steel

Availability: In Stock (Only 5 left!)

  |  Item #: ACC-B6.5RHB20185R-SS-12
MPN: B6.5RHB20185R(SS)

Premium Grade AR-15 Barrel 20" Heavy, w/ 1:8 5rd Twist, 6.5 Grendel Type 2, Rifle Length, Stainless Steel

Don't forget the AeroShell 33MS Mil Spec Armorer's Grease!

Only 5 left

MSRP: $149.99  | 
Your Price:

Regular Price: $106.99

Special Price: $85.60

MSRP: $149.99  | 
Your Price:

Regular Price: $106.99

Special Price: $85.60


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Brutus' Description

Premium Grade AR-15 Barrel 20" Heavy, W/ 1:8 5R Twist, 6.5 Grendel, Rifle Length, Stainless Steel

100% American made. Barrels are manufactured from two types of steel.

  • 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
  • 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.

 

They are Drilled, Reamed, Rifled, Turned, and if Applicable, fluted on CNC Machines. All our Finished Barrels go through a 100% Inspection Process.

Inspections Equipment includes CMMs and Air Gauges for the Bores. Our Barrels are manufactured under the ISO-9002 Quality Systems.



What is 5R Rifling

Conventional rifling uses either 6 or 4 symmetrical lands and grooves on the bullet. Each of the lands (the raised portion of the rifling) are directly opposite one another. Likewise the grooves are opposite of one another. 5R rifling improves upon this by using 5 lands and grooves over the even numbers which puts lands opposite of grooves. Further, the transition from the top of the land to the groove is sloped.

5R reduces projectile deformation as it passes through the bore during the firing sequence. By placing the lands opposite of the grooves, the bullets are no longer squeezed on opposite sides ensuring the projectile stays uniform instead of squeezing material into the grooves. More uniform projectile means better accuracy. Secondly, by sloping the transition to the groove, the barrels become much easier to clean. In a conventionally rifled platform, these corners become depositories for lead and superheated materials left after shooting. Cleaning supplies have a hard time reaching these corners as they are incredibly small. By sloping it, cleaning supplies are easily able to get to the deposits.

Specifications

Product Specs Length 20
Profile Heavy
Twist 1:8 5R
Finish Stainless
Material 416 Stainless Stee
Thread Pitch 5/8x24
Caliber 6.5 Grendel Type 2
Feed Ramp M4
Flutes none
Gas System Rifle Length
Gas Block System 0.750
Gas Hole Diameter 0.086
Charging Style No
Country of Manufacture United States
License Requirement None
Manufacturer US Contractor
Mfg. Part Number B6.5RHB20185R(SS)
UPC No
Caliber/Gauge 6.5 Grendel
Action No
Barrel Length 20
Barrel Twist 1:8 5R
Barrel Bore Type No
Barrel Finish Stainless
Barrel Fluting None
Barrel Profile Heavy
Mount Type No
Beam Color No
Firearm Fit No
Threaded Barrel No
Condition New
Free Shipping No
Weight 2.45 Lbs

Manufacturer's Description

Premium Grade AR-15 Barrel 20" Heavy, w/ 1:8 5rd Twist, 6.5 Grendel, Rifle Length, Stainless Steel

100% American made. Barrels are manufactured from two types of steel.

  • 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
  • 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.

 

They are Drilled, Reamed, Rifled, Turned, and if Applicable, fluted on CNC Machines. All our Finished Barrels go through a 100% Inspection Process.

Inspections Equipment includes CMMs and Air Gauges for the Bores. Our Barrels are manufactured under the ISO-9002 Quality Systems.

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