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Sharps XPB Carrier Group Complete
Sharps XPB Carrier Group Complete
Sharps Rifle Company XPB (Xtreme Performance Bolt) Carrier Group Complete


 
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The Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete is precisely machined from S7 tool steel. The XPB undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with DLC (Diamond Like Carbon) Coating.
Your Price: $219.99
Sale Price: $179.99
Savings: $40.00

Stock Status:In Stock

Availability: Usually Ships in 3 to 5 Business Days
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Description
 

The Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete has the same design as the Balanced Bolt Carrier Group and is precisely machined from S7 tool steel. The XPB undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with DLC (Diamond Like Carbon) Coating. The XPB Carrier Group Complete displays the SRC logo machine cut and visible when the ejection port door is open. The XPB fits standard AR-15/M16/M4 rifles chambered in .223/5.56mm, 25-45 Sharps and 300 Blackout calibers.

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

Technical Data
Bolt: S7 Tool steel, shot peened DLC coated (U.S. Patent No. 9,863,729)
Bolt Carrier:
S7 Tool 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




Strongest AR15 BCG XPB Extreme Performance Bolt
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Average Rating: 5 of 5 Total Reviews: 223 Write a review »


  0 of 0 people found the following review helpful:
 
May 22, 2018
Reviewer: Anonymous Person from Essex, MD United States  
This is the best ar BCG on the market!!!!! All of my ar15s have this BCG now. I have not had any problems with them. Money well spent.

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  0 of 0 people found the following review helpful:
 
Great product! May 21, 2018
Reviewer: Robert Johnson from Woodbury, MN United States  
Works great and looks even better!

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  0 of 0 people found the following review helpful:
 
Great service and quality May 18, 2018
Reviewer: Anonymous Person from Playa del Rey, CA United States  
This is for my 2nd AR build. The reviews speak for themselves - don't see how I could go wrong. I can only address SRC service. BCG was well-packed and arrived a day sooner than the 3 day priority mail promised. Can't wait to get this installed.

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  0 of 0 people found the following review helpful:
 
May 17, 2018
Reviewer: Kenneth Patterson from Gilbert, AZ United States  


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  0 of 0 people found the following review helpful:
 
XPB carrier group May 17, 2018
Reviewer: michael musgrave from corpus christi, TX United States  
Arrived in mail fast and nicely packaged. Looks real nice with the Diamond like coating DLC in fused in the metal. The Sharps BCG is also advertised as “balanced” in the way cuts are made to help prevent friction in the chamber and help the DLC coating last many years. I know the story of the metallurgy of it as it has been advertised for a few years now and the fit and finish is top notch. I have been using it a week now and have about 1200 rounds through it using it with a BCM upper. No issues and after light cleaning it looks practically brand new. Very happy with this and as also a home defense gun it’s used in trust that it will work when I need it. Thanks Sharps

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