Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Daily Deal: FREE Burris Signature HD 8x42 Binos w/ Eliminator 6 Purchase A $530 Value - Get Yours!

AR-15 GAS BLOCK LOW PROFILE Reviews & Ratings

Minimal-profile replacement for factory front sight/gas block won’t interfere with extended-length tactical forearms, while ensuring proper function of gas system for reliable cycling. Protrudes only .420' above barrel, covers less than 1' of barrel length, and adds only 1.4 oz. of weight. Compatible with M4-style carbines and M16A2/A3/A4-style rifles with any length, .750' O.D. barrel. Two steel setscrews keep the block securely anchored to the barrel to prevent shifting even under the force of full-auto recoil. Black oxide finish matches most factory barrel finishes. SPECS: Carbon steel, oxide finish, matte black. .950” (24mm) long. 1.375” (3.5cm) overall height. 1.4 oz. (41g) weight. Fits AR-15/M16 with .750” O.D. barrel at gas block mounting position. Includes hex-head setscrews.

See all of our AR15s and AR15 parts here.

View Product

Write a review

4 Stars

2 Stars

Reviews Summary

The AR-15 Gas Block Low Profile receives mixed feedback, with many users praising its easy installation and secure fit on various barrels. However, some reviewers encountered sizing issues, requiring adjustments for proper fitting. Despite these challenges, overall satisfaction appears high, especially due to its lightweight design and value for money.

What Reviewers Are Saying

Installation Experience

60%

Many reviewers highlight the straightforward installation process, noting that the gas block easily fitted on several types of barrels. However, some reported tight fits that necessitated adjustments, indicating inconsistency in tolerances across different models.

Fitment Issues

40%

A notable concern among users was compatibility, with some finding the gas block either too tight or improperly sized for certain barrels. This led to mixed experiences, as while some had no issues, others faced challenges that resulted in damaged components.

Quality and Performance

55%

Reviewers praised the overall quality and lightweight nature of the gas block. Many conveyed confidence in its function, reporting no gas leaks and appreciating the secure fit post-installation, which upheld performance when firing.

Value for Money

50%

Several users emphasized the affordability of the gas block relative to its performance. They felt that the product provided great value, often expecting to pay more for similar quality and performance in the market.

Material and Durability

45%

Reviewers noted the quality of materials used in the gas block, with many expressing satisfaction in its durability and construction. Users appreciated knowing that they could use this product reliably in their builds without fear of wear or gas leaks.

Sort by Filter by rating

Great buy

Exactly what I needed. Simple to install.

Fits great.

Installed on a Criterion barrel with no issues. Everything lined up perfectly.

fit fine

I installed this on a DPMS barrel that I cerakoted and it fit just fine. it fit snug, just like it is supposed to.

Awesome

Fit perfectly on my Rock River. Installation was a breeze and rifle cycling like it should. Fits well under small diameter BCM handgaurd

Fits a Ballistic Advantage Barrel

I put this on a 10.5 in Ballistic Advantage barrel BABL556005M and it slid right on. Some people have complained about it being too tight on other barrel brands, so I thought I would share my experience.

Easy to install, nice fit

I installed the Troy gas block on my Smith & Wesson M&P15i to use with the Hogue forend soon to come from Brownells. Had no issues whatsoever. Easy to slide on, easy to line up with the gas port. Great value for the money. The most difficult part I had was punching out the pins holding the A2 front sight.

Priced right, easy to install

I bought this, having read about fitment issues. It was too tight to just slip onto two barrels I had handy, so I took a piece of emery cloth and a hand drill to the inside for all of 20 seconds. Even without oil, it fit easily, but not too loosely. I don't think that was a lot of effort, and it seals well to the port. If it needed to be machined, I would give it a different review. For the price, ease of installation, and function, this is a 5-star block.

Excellent Block

Very lightweight, secure mount, and high quality.

Looks Great and Works

I research a number of gas block and decided on this one. Glad I did. I had a bit of a problem getting it to slide onto my S/S White Oak Wylde barrel, but after a bit of 600 emory it fits nice and looks great sitting just in front of my Hogue Rifle length OverMolded Free Float Tube.

Troy Low Profile Gas Block

I mounted this on a 16" Daniel Defense barrel.VERY low profile. The install was perfect. The tolerances were exact. Tight fit but slid on easily with no play. After firing there was NO leakage around the gas tube. Could have paid more but could not have gotten a better part.