Sharps Xtreme Performance Bolt (XPB) 308 Balanced Bolt Carrier Group Complete In DLC (Diamond Like Carbon)

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Sharps Xtreme Performance Bolt (XPB) 308 Balanced Bolt Carrier Group Complete In DLC (Diamond Like Carbon)

$279.99 $199.99

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)

Sharps latest offering!
Our new 308 BCG is an upscale version of our very popular Sharps 5.56 Balanced Bolt Carrier Group with our patented Relia-Bolt™. Our 308 BCG is designed to be compatible with DPMS LR-308 and similar style AR-10 platform rifles.

12 in stock (can be backordered)

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SKU: SHARPSXPB308 Categories: , , ,

Description

The Sharps 308 Balanced Bolt Carrier Group Complete has the same innovative design as the Sharps 5.56 Balanced Bolt Carrier Group. The 308 carrier is precisely machined from case-hardened 8620 alloy steel. The 308 Relia-Bolt™ is made of robust 9310 nickel-chrome-moly alloy steel. The entire BCG is finished with DLC (Diamond Like Carbon) Coating. The Sharps 308 Balanced Bolt Carrier Group has the SRC logo machine cut and visible when the ejection port door is open. Sharps 308 BCG is compatible with DPMS LR-308 style platforms.

We offer a 30-Day Money Back Guarantee on our complete line of Sharps bolt and bolt carrier products.

Lifetime Guarantee

If any Relia-Bolt™ is found to have defects in materials or workmanship, SRC will repair or replace it at no charge.

Technical Data

  • Bolt: 9310 steel, shot peened DLC coated (U.S. Patent No. 9,863,729)
  • Bolt Carrier: 8620 steel, shot peened and DLC coated
  • Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked and DLC Coated
  • Cam Pin: 4340 Steel, Manganese Phosphate coated
  • Firing Pin: Mil Spec firing pin made of 8740 steel, center‐less ground and Hard Chrome coated
  • Extractor: 4340 Steel, Manganese Phosphate coated
  • Ejector: S7, shot peened and Manganese Phosphate coated
  • Extractor Pin: S7, shot peened and Manganese Phosphate coated
  • Mil-Spec Extractor and Ejector Springs, Firing Pin Retaining Pin, Gas Rings
  • Batch MPI and HPT tested
  • Tensile strengths of 1550-1600 mpa, or 220,000-235,000 psi.
  • Toughness of over 200 ft./lb. Charpy C-Notch
  • HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310

Technical Data on DLC Coating

Coating thickness: 2 – 4 Microns

  • Hardness HV 0.05: HRC 80+
  • Deposition method: PVD UBM/PACVD
  • Friction vs. steel, dry: 0.1
  • Color: Matte Black / Hyper Black (Polished)

Additional information

Weight 17.7 oz

1 review for Sharps Xtreme Performance Bolt (XPB) 308 Balanced Bolt Carrier Group Complete In DLC (Diamond Like Carbon)

  1. Rated 5 out of 5

    Everett Hunt (verified owner)

    When the Sharps Customer Service Rep said that they were working on a .308 Winchester BCG, I thought they were joking… NOPE! I am ecstatic to be one of the first to buy a SRC 308 BCG! Can’t wait to get it and try it out Thank you Sharps!

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