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


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

Stock Status:(Out of Stock)

Availability: Usually Ships in 3 to 5 Business Days
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Description
 

The Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete- FDE 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 ZrN (Zirconium Nitride) 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 and ZrN coated (U.S. Patent No. 9,863,729)
Bolt Carrier:
S7 Tool steel, shot peened and ZrN coated
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked and ZrN 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 ZrN Coating

Coating thickness: 0.2 - 0.5 Microns
Hardness HV 0.05: 1500-1800 or 70+ HRC
Deposition method: PVD UBM/PACVD
Friction vs. steel, dry: 0.5
Color: Flat Dark Earth




Average Rating: 5 of 5 Total Reviews: 27 Write a review »


  0 of 0 people found the following review helpful:
 
Awesome BCG April 14, 2018
Reviewer: Jason from Oglesby, IL United States  
Well done coating! Really excited about the FDE and extremely well made product and a pure joy to have the quality of Sharps. This is the 5th Bolt carrier group I purchased from Sharps and will continue to buy more when I need them.


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  0 of 0 people found the following review helpful:
 
XPB BCG April 13, 2018
Reviewer: Joseph Mikus from Mt Pleasant, TN United States  
Top of the line.  Love this thing!  Oh yeah and the shipping was Fast!  Keep up the quality and Thank You!

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  0 of 0 people found the following review helpful:
 
April 12, 2018
Reviewer: Larry Mackey from Palmdale , CA United States  
Again very happy with the quality.

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  0 of 0 people found the following review helpful:
 
April 11, 2018
Reviewer: Rodney Painter from San diego, CA United States  
Amazing quality, I love the BCG. It feels great and shoots amazing. Highly highly suggest for anyone wanting an upgraded BCG.  Wonderful product and great price.

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  0 of 0 people found the following review helpful:
 
SRC BCG's April 10, 2018
Reviewer: Anonymous Person  
Have 4 of 'em - buy no others, Sharps' BCG's are indestructible compared to competitors...and usually at half the competitors price points! I typically go with the "buy once cry once" theory but Sharps has nailed it with these - and I'd pay double for 'em if that's how SRC priced 'em. Do some metallurgy, structural integrity, and non-destructive / destructive research on the materials SRC uses vs. what others use and you'll understand why...and then buy!

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