BCM 11.5'' AR-15 Upper Receiver With Front Sight Block: Best AR Pistol Upper?

Published on March 10, 2020
Duration: 18:00

This review covers the Bravo Company USA (BCM) 11.5-inch AR-15 upper receiver with a pinned Front Sight Block (FSB). The expert analysis highlights its robust construction, including a cold hammer-forged, chrome-lined barrel, and excellent reliability demonstrated over 1,500 rounds with zero malfunctions. The pinned FSB offers durability and a reliable backup sight, though it adds weight and limits handguard options. The 11.5-inch barrel length is noted for improved dwell time and reliability compared to shorter barrels.

Quick Summary

The BCM 11.5'' FSB Upper Receiver provides excellent reliability, demonstrated by over 1,500 rounds fired without malfunctions, including suppressed use. Its pinned Front Sight Block offers superior durability for backup sights, though it adds weight and limits handguard length. Accuracy can achieve sub-MOA with match ammo.

Chapters

  1. 00:31Introduction to BCM 11.5'' FSB Upper
  2. 01:19Accuracy Testing with Various Ammunition
  3. 04:30Barrel and Muzzle Device Specifications
  4. 06:23Front Sight Block: Pros and Cons
  5. 09:5711.5'' vs 10.5'' Barrel Benefits (Dwell Time)
  6. 10:56Receiver and Bolt Carrier Group Details
  7. 13:50Reliability Testing and Pricing Analysis

Frequently Asked Questions

What are the key benefits of the BCM 11.5'' FSB Upper Receiver?

The BCM 11.5'' FSB Upper offers exceptional reliability due to its 11.5-inch barrel providing increased dwell time. The pinned Front Sight Block ensures durability and a robust backup sighting system, making it a strong duty-grade option.

How accurate is the BCM 11.5'' FSB Upper?

Accuracy testing showed sub-MOA performance (7/8 inch groups) at 100 yards with match-grade ammunition like Gorilla 69gr. Standard M193 55gr ammunition yielded groups around 1.75 inches.

What are the drawbacks of the pinned Front Sight Block (FSB) on this BCM upper?

The primary drawbacks of the pinned FSB are the added weight (approximately 4.6 ounces) and the limitation it imposes on handguard length, typically restricting it to around 7 inches.

How reliable is the BCM 11.5'' FSB Upper under heavy use?

The BCM 11.5'' FSB Upper demonstrated outstanding reliability, firing over 1,500 rounds without a single malfunction. This testing included suppressed fire and select-fire conditions, highlighting its robust performance.

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