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AR-15 16" Lightweight Contour Barrel, 1:7 5R, 5.56 NATO, Stainless, .750 Gas Block

Availability: In Stock

  |  Item #: ACC-B556MLW16175R-SS-75-132
MPN: B556MLW16175R(SS)-750
AR-15 16" Lightweight Contour Barrel, 1:7 5R, 5.56 NATO, Stainless, .750 Gas Block

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Specifications

Product Specs Length 16
Profile Lightweight
Twist 1:7 5R
Finish Parkerized
Material 416R Stainless
Thread Pitch 1/2 x 28
Caliber 5.56 NATO
Feed Ramp M4
Flutes N/A
Gas System Mid Length
Gas Block System 0.750
Gas Hole Diameter 0.082
Country of Manufacture United States
License Requirement None
Manufacturer US Contractor
Mfg. Part Number B556MLW16175R(SS)-750
UPC No
Caliber/Gauge 5.56x45
Action No
Barrel Length 16
Barrel Twist 1:7 5R
Barrel Bore Type No
Barrel Finish Stainless
Barrel Fluting None
Barrel Profile Contour
Mount Type No
Beam Color No
Firearm Fit No
Threaded Barrel No
Condition New
Deal Of The Day No
Free Shipping No
Weight 1.55 Lbs

AR-15 16" Lightweight Contour Barrel, 1:7 5R, 5.56 NATO, Stainless, .750 Gas Block

Availability: In Stock

  |  Item #: ACC-B556MLW16175R-SS-75-132
MPN: B556MLW16175R(SS)-750

Premium Grade AR-15 Barrel 16" Lightweight Contour, w/ 1:7 5rd Twist, 5.56 NATO, Mid-Length, Stainless

Mid Length gas system, with .082 gas port, .750 gas block diameter, and threaded for comp. Barrel extension installed with M4 feed ramps.

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

MSRP: $119.99  | 
Your Price:

Regular Price: $106.99

Special Price: $85.60

MSRP: $119.99  | 
Your Price:

Regular Price: $106.99

Special Price: $85.60


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Brutus' Description

Premium Grade AR-15 Barrel 16" Lightweight Contour , w/ 1:7 5R Twist, 5.56 NATO, Mid-Length, Stainless

Mid Length gas system, with .082 gas port, .750 gas block diameter, and threaded for comp. Barrel extension installed with M4 feed ramps.

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 16
    Profile Lightweight
    Twist 1:7 5R
    Finish Parkerized
    Material 416R Stainless
    Thread Pitch 1/2 x 28
    Caliber 5.56 NATO
    Feed Ramp M4
    Flutes N/A
    Gas System Mid Length
    Gas Block System 0.750
    Gas Hole Diameter 0.082
    Country of Manufacture United States
    License Requirement None
    Manufacturer US Contractor
    Mfg. Part Number B556MLW16175R(SS)-750
    UPC No
    Caliber/Gauge 5.56x45
    Action No
    Barrel Length 16
    Barrel Twist 1:7 5R
    Barrel Bore Type No
    Barrel Finish Stainless
    Barrel Fluting None
    Barrel Profile Contour
    Mount Type No
    Beam Color No
    Firearm Fit No
    Threaded Barrel No
    Condition New
    Deal Of The Day No
    Free Shipping No
    Weight 1.55 Lbs

    Manufacturer's Description

    Premium Grade AR-15 16" Lightweight Contour Barrel, w/ 1:7 5rd Twist, 5.56 NATO, Mid-Length, Stainless, .750 gas block diameter

    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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