Testing a Colt SOCOM AR-15 Barrel (Groups, Borescope, Headspace, etc)

Published on August 7, 2025
Duration: 13:03

This expert-level analysis by Preston Moore thoroughly tests a new 14.5-inch Colt SOCOM AR-15 barrel. The review details technical specifications, physical inspections including borescope analysis and gauging, and extensive range testing with 30-shot groups across multiple ammunition types. The data provides valuable insights into the barrel's real-world performance and accuracy potential.

Quick Summary

The 14.5-inch Colt SOCOM AR-15 barrel, made from 4150 CMV steel with chrome lining, features a 1:7 twist and carbine gas system. It passed headspace gauges and showed good performance in 30-shot groups, with IMI Razor Core 77gr HPBT achieving 2.877 MOA.

Chapters

  1. 00:00Introduction and Overview
  2. 00:24Technical Specifications
  3. 00:43Physical Inspection and Gauging
  4. 01:52Borescope Inspection
  5. 03:20Shooting Setup and Methodology
  6. 04:52Range Testing: IMI Razor Core
  7. 07:31Range Testing: AAC 77gr OTM
  8. 09:50Range Testing: Winchester M193
  9. 11:57Final Results Summary

Frequently Asked Questions

What are the key technical specifications of the Colt SOCOM AR-15 barrel tested?

The tested barrel is 14.5 inches long, made of 4150 chrome moly vanadium steel with a chrome-lined chamber and bore. It features a carbine-length gas system, 5.56 NATO chamber, 1:7 twist rate, 0.750-inch gas block journal, and 1/2x28 threads, including a front sight base.

How did the Colt SOCOM barrel perform in 30-shot group testing?

The barrel achieved its best 30-shot group with IMI Razor Core 77gr HPBT (2.877 MOA), followed by Winchester M193 55gr FMJ (4.116 MOA), and AAC 77gr OTM (4.038 MOA). The IMI load yielded the best A-ZED score of 187 yards.

What was the borescope analysis of the Colt SOCOM barrel's throat and rifling?

The borescope revealed a reamer-cut throat with slight unevenness and roughness compared to match barrels, but better than some FN barrels. Rifling showed copper fouling from factory test firing, and the gas port had an internal chamfer.

Was the Colt SOCOM barrel's headspace within specifications?

Yes, the barrel passed 5.56 NATO minimum, No-Go, and Field headspace gauges when tested with a new JP bolt, confirming it meets standard chamber and headspace requirements for safe operation.

Related News

All News →

More Reviews Videos You Might Like

More from Preston Moore

View all →