MRA Match 5R Nitride AR-10 barrel 308 Win - Maple Ridge Armoury
Maple Ridge Armoury is a boutique Canadian manufacturing company focused on innovative, industry leading design and manufacturing of firearm parts and accessories. Our team is composed of dedicated, passionate professionals who are committed to producing quality products and to providing exceptional service to our customers.
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MRA Match 5R Nitride AR-10 barrel 308 Win

(1 customer review)

$479.99$489.99

The Maple Ridge Armoury Match 5R Nitride AR-10 barrel is precision CNC machined in Canada from premium, GBQ 4140 CMV steel blanks.    These button rifled blanks are honed, lapped, and stress relieved providing the best foundation to machine and assemble our line of premium barrels.  All V1 Match Nitride AR-10 barrels are backed by our 1 MOA or better accuracy guarantee and lifetime warranty.  More information about the features and benefits of our barrels can be found in the product description tab below.
  • Material: 4140 CMV Steel
  • Treatment: QPQ Black Nitride
  • M118LR chamber, 308 bore – 1:11.25” twist rate  (Will safely accept 308 Win and 7.62×51 cartridges)
  • 5R rifled, honed and hand lapped
  • 11 degree target crown
  • Precision cut chamber and gas port
  • Barrel Extension: DPMS pattern, M4 feed ramps, Nickel Boron plating
  • Profile:  SPR
  • Fluting Style: Straight
  • Gas Journal: .750″
  • Gas Length: Rifle Length DPMS
  • Muzzle Thread: 5/8″ x 24
  • Barrel Length: 18.6″
  • Weight:
    • SPR fluted: 2lbs 8oz
    • Taper Pencil: 1lb 15oz
  • Accuracy Guarantee
  • Lifetime Warranty
  • Made in Canada
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Description

The Maple Ridge Armoury Match 5R Nitride AR-10 barrel is precision CNC machined in Canada from premium, GBQ 4140 CMV steel blanks.    These button rifled blanks are honed, lapped, and stress relieved providing the best foundation to machine and assemble our line of premium barrels.  All V1 Match Nitride AR-10 barrels are backed by our 1 MOA or better accuracy guarantee and lifetime warranty.

All MRA Match 5R Nitride barrels have precision cut chambers, gas ports, and an 11 – degree target crown .   The M118LR chamber will safely accept both 308 Win and 7.62×51 NATO cartridges and effectively accommodate the ogive of the Sierrra 168 and 175 HPBT cartridges loaded near or at magazine length.  The 1:11.25″ twist rate will effectively stabilize projectiles between 147 and 175 grains achieving optimal performance with the heavier projectiles in the spectrum.   We use an SPR profile to achieve an optimal balance between harmonic resistance , heat resistance, and weight savings.  The unique deep cut fluting presents greater barrel surface area to facilitate improved air cooling while dramatically reducing weight without compromising the overall rigidity of the barrel. We also offer a Tapered Pencil profile to achieve the greatest possible weight savings while maintaining structural integrity.
All Maple Ridge Armoury Match 5R Nitride AR-10 barrel undergo QPQ Black Nitride heat treatment. This heat treatment provides superior corrosion, wear, and abrasion resistance.  Instead of adding material to the bore (like Chrome lining), Nitride treats the existing steel by imbuing nitrogen into the surface of the steel both inside and out.  In this way, the Nitride process offers excellent accuracy potential.

Specifications

  • Material: 4140 CMV Steel
  • Treatment: QPQ Black Nitride
  • M118LR chamber, 308 bore – 1:11.25” twist rate  (Will safely accept 308 Win and 7.62×51 cartridges)
  • 5R rifled, honed and hand lapped
  • 11 degree target crown
  • Precision cut chamber and gas port
  • Barrel Extension: DPMS pattern, M4 feed ramps, Nickel Boron plating
  • Profile:  SPR
  • Fluting Style: Straight
  • Gas Journal: .750″
  • Gas Length: Rifle Length DPMS
  • Muzzle Thread: 5/8″ x 24
  • Barrel Length: 18.6″, 20″
  • Weight:
    • SPR fluted 18.6″: 2lbs 8oz
    • SPR fluted 20″:  2lbs 10oz
    • Taper Pencil: 1lb 15oz
  • Accuracy Guarantee
  • Lifetime Warranty
  • Made in Canada
Additional Information
Weight13 kg
Dimensions10 × 11 × 12 cm
Barrel Length

,

Profile

Taper Pencil, SPR Straight Flute, SPR Spiral Flute

Caliber

308 Winchester

Finish

Black Nitride

Reviews (1)

1 review for MRA Match 5R Nitride AR-10 barrel 308 Win

  1. Peter (verified owner)

    I ordered this barrel for a Stag 10 build that will ultimately end up being my primary hunting rifle. Ryan was extremely helpful and more importantly, available, when I had questions on some specific details about MRA barrels. Customer service is important to me. The barrel arived on time and well packaged. The fit and finish was exceptional. Remarkably my newly completed build has ran perfectly with only one… ONE feed issue in the first 10 rounds (cheapest stuff my buddy had kicking around) and I’m leaning towards a sticky mag for that. Having said that, Ive only put about 150 rounds total through the beast. I was taken back with some of my early groups (1-1.25MOA) despite the stock trigger on the Stag being the worst, but unfortunately a scope issue had me chasing my tail later in the session. Further testing must be done to determan accuracy but I believe this barrel will outshoot me any day of the week. The stock Stag barrel comes in at 52.8 ounces and thats almost 13 ounces heavier then the MRA. I believe this barrel has been key in my successful attempt to build a light weight, accurate and ultimately reliable rifle.

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