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AR-15/M16 LOW PROFILE GAS BLOCKS Reviews & Ratings

Designed to fit AR-15 and M16 barrels, the BCM low-profile gas block is machined from high quality steel to Mil-Spec tolerances. Gas block includes set screws for mounting and a phosphate finish for corrosion and wear resistance. Available with either .625" or .750" inside diameter.

SPECS: Machined steel, phosphate finish. 1.34" high, (3.4cm), 1" long (2.5cm). Includes set screws for mounting.

See all of our AR15s and AR15 parts here.

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3 Stars

2 Stars

1 Stars

17%

Reviews Summary

Customers overwhelmingly praise the AR-15/M16 Low Profile Gas Blocks for their durability and performance, with many enjoying a perfect fit after a tight initial installation. However, some users encountered fitting issues, requiring modifications for proper installation, leading to mixed experiences overall.

What Reviewers Are Saying

Product Performance

67%

Numerous reviewers highlight the exceptional performance and durability of the gas blocks, noting they can endure extensive use without failure, which reinforces the product's reliability and effectiveness in various setups.

Installation Issues

50%

Many customers mention challenges with the initial fit of the gas block, often finding it too tight out of the box. This has led some reviewers to require additional tools and adjustments for successful installation, impacting their experience.

Fit and Design

50%

The design of the gas block is frequently appreciated, with users noting the snug fit once properly installed. However, this tight fit can be polarizing, with some preferring it for security while others find it a hindrance.

Value for Money

60%

Reviewers feel the gas block offers good value for its price, particularly considering its strong performance and solid construction, often comparing it favorably against competitors.

Compatibility Concerns

17%

A few users express frustration with compatibility issues, notably one instance where the gas block failed to fit a specific barrel. This highlights potential sizing inconsistencies that can affect user experience.

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AFAIC BCM Gas Blocks Are The Standard,

Everything else is a distant second or whatever. When you run over 100,000 rounds through a gas block without issue you tend to start thinking this way.

Would you recommend this? Yes, I would recommend to a friend

by STEPHEN A. WELDON on September 15, 2024

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Bomb proof BCM quality!

Fits like a glove and works like a charm. Love me some BCM!!

Great

Installed on my LR 308 only had minor fitting issue lightly sanded barrel and had a nice tight fit which I prefer to a loose easy to install fitting. After sanding and fitting everything was Cerakoted. Looks and works awesome.

Well Made but Tight Fitting

Like others have said, the fit is a bit tight out of the box, but a plastic punch and deadblow hammer seated it in a minute or two. Solidly made and worth the price.

by Dominic Badura on August 10, 2024

Verified Purchase

Was this review helpful? 1

Nice piece

The Larue rail I purchased required an extremely low profile gas block. I found this one fit the bill perfectly. My only gripe, as others have found, is that its very tight. Had to put it in the vice and work on the inside with sandpaper for the better part of 30 min. Another gas block I tried slid right onto the same barrel with zero resistance. Overall though, very pleased

Too tight

This would not fit my Faxon Barrel with .750" Journal. I tried freezing the barrel and heating up the gas block, and still could not get it installed. Replaced with an Odinworks that installed flawlessly.