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Sharps 308 Relia Bolt Carrier Group Complete
Sharps 308 Relia Bolt Carrier Group Complete

These BCG's are brand new in original product packaging and 100% functional but may have cosmetic imperfections/blemishes.
Purchased Separately: $279.99
Your Price: $199.99
Savings: $80.00

Availability: Usually Ships in 24 to 72 Hours

Description Technical Specs

The Sharps Relia Bolt Carrier Group Complete has the same design as the Balanced Bolt Carrier Group and is precisely machined from 9310 tool steel. The Relia Bolt undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with DLC (Diamond Like Carbon) Coating. The Relia bolt Carrier Group Complete displays the SRC logo machine cut and visible when the ejection port door is open. The Relia Bolt fits standard AR-10 rifles chambered in 308 or 7.62.

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)
Average Rating: 5 of 5 Total Reviews: 1 Write a review »

  1 of 2 people found the following review helpful:
S7 Tool Steel or nothing else! November 25, 2018
Reviewer: Everett Hunt from Springfield, TN United States  
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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