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Sharps XPB Carrier Group Complete in NiB-X
Sharps XPB Carrier Group Complete in NiB-X
Sharps Rifle Company XPB (Xtreme Performance Bolt) Carrier Group Complete - NiB-X


 
Order Yours Today! 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 NiB-X (Nickel Boron) Coating.
Your Price: $249.99
Sale Price: $189.99
Savings: $60.00

Stock Status:Out of Stock

Availability: Usually Ships in 1 to 2 Weeks
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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 NiB-X (WMD's nickel boron) 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.

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Technical Data
Bolt: S7 Tool steel, shot peened NiB-X coated (U.S. Patent No. 9,863,729)
Bolt Carrier:
S7 Tool steel, shot peened and NiB-X coated
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked and NiB-X Coated
Cam Pin: 4340 Steel, NiB-X coated
Firing Pin: Mil Spec firing pin made of 8740 steel, center‐less ground and Hard Chrome coated
Extractor: 4340 Steel, NiB-X coated
Ejector: S7, shot peened and Manganese Phosphate coated
Extractor Pin: S7, shot peened and Manganese Phosphate coated
Mil-Spec 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


NiB-X Coating:

Specifically engineered NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. The BCG components are coated and polished to reduce fouling adherence. Coating is guaranteed for life against chipping, spalling or flaking. Over 30K rounds in Government protocol endurance testing did not wear the coating off. Especially beneficial in short barrel setups and suppressed platforms.
Hardness HV 0.05: HRC 70+
Friction vs. steel, dry: 0.1
Color: Hyper Silver (Polished)



Average Rating: 5 of 5 Total Reviews: 4 Write a review »


  1 of 1 people found the following review helpful:
 
Best BCG out there. August 31, 2018
Reviewer: Eric Frisch from Blairstown, NJ United States  
I have several other BCG’s to compare the Sharps to and it is by far the best hands down. It cycles smoother, has less felt recoil, and just looks good. I will never buy another brand BCG. If your on the fence don’t hesitate it’s worth every penny.

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  0 of 0 people found the following review helpful:
 
bolt carrier August 21, 2018
Reviewer: Kelly Kendall from West Jordan, UT United States  
great

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  1 of 1 people found the following review helpful:
 
Awesome bolt and bolt carriage August 12, 2018
Reviewer: Michael Dague from Las Vegas, NV United States  
This is my second Sharps bolt and bolt carriage, when shooting 3 gun fraction of seconds count the Sharps bolt and bolt carriage cycle faster and softer then the average system allowing to get back on target quicker saving you time.
The bonus is cleaning is a breeze, no scraping or soaking in solvent just wipe off, lubes and go.

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  2 of 2 people found the following review helpful:
 
XPB NiB-X BCG July 29, 2018
Reviewer: Brian Matlock from Missouri city , TX United States  
Converted all my AR’s to the XPB, the NiB-X just makes it a dream to clean. IMO it’s a go to war BCG. Very impressed.

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