BCM's BFH Barrel & New KMR Alpha AR-15 Handguard Review

Published on December 9, 2015
Duration: 13:38

This guide details the installation of the BCM BFH Barrel and KMR Alpha Handguard for an AR-15 platform. It emphasizes proper safety protocols and the technical specifications of these components, drawing from the expertise of a seasoned firearms reviewer. The BCM BFH barrel is known for its durability and accuracy, while the KMR Alpha handguard offers a lightweight and modular platform for accessories.

Quick Summary

The BCM BFH Barrel is a Cold Hammer Forged, Chrome-lined barrel tested to 70,000 PSI (HPT) and Magnetic Particle Inspected (MPI). It features a 1:7 twist rate and a mid-length gas system, delivering sub-MOA accuracy with appropriate ammunition. The KMR Alpha handguard is a lightweight, aluminum KeyMod system offering modularity at a competitive price point.

Chapters

  1. 00:00Introduction & Shooting Montage
  2. 01:13BCM Philosophy & Quality
  3. 02:42BFH Barrel Technical Details
  4. 04:04Chamber & Feed Ramps
  5. 04:44Bolt Carrier Group (BCG) Overview
  6. 06:15KMR Alpha Handguard Features
  7. 09:01Pricing & Accessories
  8. 10:52Accuracy & Performance Testing

Frequently Asked Questions

What are the key technical specifications of the BCM BFH Barrel?

The BCM BFH Barrel is Cold Hammer Forged, features a Manganese Phosphate finish, is Chrome-lined, HPT (High Pressure Tested) at 70,000 PSI, MPI (Magnetic Particle Inspected), has a Mid-length gas system, and a 1:7 twist rate, chambered for 5.56 NATO.

How does the BCM KMR Alpha Handguard compare to its predecessor?

The KMR Alpha is an all-aluminum version of the original magnesium KMR rail. It maintains a slim 1.5-inch outer width and uses the KeyMod mounting system, but is approximately $75 cheaper, making it a more accessible option.

What kind of accuracy can be expected from the BCM BFH Barrel?

During range testing with HPR 60gr V-Max ammunition, the BCM BFH barrel demonstrated exceptional accuracy, achieving sub-MOA (Minute of Angle) groupings at 100 yards.

What makes BCM components suitable for 'Gunfighter' applications?

BCM components are designed for professional use and life-defense, emphasizing quality over commercial-grade alternatives. This includes using superior materials like Carpenter 158 steel for BCG bolts and rigorous testing protocols such as HPT and MPI.

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