Strongest AR15 BCG XPB Extreme Performance Bolt

Published on August 19, 2017
Duration: 15:17

The Sharps Rifle Company XPB BCG is presented as a high-performance upgrade for AR-15s, emphasizing its S7 tool steel construction for increased tensile strength and a DLC coating for lubricity and easy cleaning. Its reduced mass design minimizes carrier cant, leading to smoother operation and less wear. The BCG also features a Relia-Bolt with tapered lugs for improved feeding and undergoes rigorous testing, including HPT and MPI.

Quick Summary

The Sharps Rifle Company XPB BCG is a high-performance upgrade for AR-15s, featuring S7 tool steel for increased strength and a DLC coating for superior lubricity and easy cleaning. Its reduced mass design minimizes carrier cant, leading to smoother operation and less wear.

Chapters

  1. 00:00Introduction to the SRC XPB BCG
  2. 00:54Why BCG Quality Matters
  3. 02:03S7 Steel & DLC Coating Explained
  4. 03:07Reduced Mass & Carrier Cant Design
  5. 04:35Quality Control: HPT & MPI Testing
  6. 05:22Component Breakdown & Relia-Bolt
  7. 06:56XPB vs. Mil-Spec BCG Comparison
  8. 07:49Range Test: Recoil & Cycling
  9. 08:42Easy Cleaning with DLC Coating
  10. 11:05Pricing, Warranty & Finishes

Frequently Asked Questions

What makes the Sharps Rifle Company XPB BCG stand out from standard AR-15 BCGs?

The SRC XPB BCG is made from S7 tool steel, offering significantly higher tensile strength than standard Carpenter 158. It also features a Diamond-Like Carbon (DLC) coating for superior lubricity and easier cleaning, along with a Relia-Bolt with tapered lugs for improved feeding.

How does the design of the XPB BCG improve AR-15 performance?

The XPB BCG incorporates relief cuts to reduce its mass and friction. This design helps minimize carrier cant during the firing cycle, leading to smoother operation, less felt recoil, and reduced wear on the rifle's components.

What materials and quality control measures are used for the SRC XPB BCG?

The carrier is S7 tool steel, with components like the cam pin and extractor made from 4340 steel. SRC ensures quality through batch testing, including High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI), and shot peening.

Is the XPB BCG easy to clean and maintain?

Yes, the DLC coating on the XPB BCG makes it exceptionally easy to clean. Carbon buildup can often be wiped away with a dry cloth, even if the BCG was run without lubrication.

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