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AR-15 GAS BLOCK LOW PROFILE Reviews & Ratings

Slim replacement for cumbersome USGI front sight/gas block tower features a low profile for a more streamlined appearance and less chance of snagging on vegetation and other gear. Covers only 1" of barrel length and reduces weapon’s forward weight for improved handling and maneuverability. Clamp On models squeeze around the barrel with included socket head screws. Set Screw models use included set screws at the bottom of the unit to anchor the gas block to the barrel for the lowest-profile installation.

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2 Stars

Reviews Summary

The Vltor AR-15 Low Profile Gas Block is generally well-regarded for its sturdy construction and effective gas sealing, fitting snugly on various barrels. However, some users have faced challenges with the screw design, as they can interfere with certain handguards and risk breakage if overtightened. Overall, it's recognized for its reliability and quality, making it a solid choice for many users.

What Reviewers Are Saying

Product Quality

75%

Many reviewers praise the Vltor gas block for its solid, well-made construction and effective design. It is described as tightly clamping and fitting well, with reliable gas sealing even after extended use. Reviewers feel confident in its durability and functionality, highlighting it as one of the better options on the market.

Installation Experience

65%

Several reviews mention the ease of installation for the gas block, affirming that it fits snugly on barrels and aligns well when tightening. However, a few users faced challenges, such as tight fitting of the gas tube and issues with the screws during installation. Overall, experiences vary but many found it straightforward to set up.

Screw Design Issues

40%

A common concern across multiple reviews is related to the screw design. Users noted that the screws can protrude and interfere with compatibility with certain handguards, leading to potential malfunctions. Some experienced broken screws during installation due to overtightening, suggesting a design that may require careful handling.

Compatibility with Handguards

35%

Reviewers discuss the gas block's suitability with various handguards, indicating that it may not fit well under all models, particularly those with tight profiles like the DD Lite rails. This lack of universal compatibility has led to some disappointment, emphasizing the need for users to confirm fitment before purchase.

Performance Reliability

70%

Users report high satisfaction with the performance of the gas block, noting consistent cycling and no gas leaks even after extensive firing. The gas block has proven reliable across diverse temperature conditions and different loads, reassuring users of its dependable functionality.

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great piece

High value installs easy and worth every penny!

nice product

well made quality product. small, compact, fits right.

Fits like a glove

I installed this gas block on a 0.75 inch diameter Black Hole weaponry barrel. It fit nice and snug. The gas tube hole was nice and snug as well. After tightening I attempted to whack the gas block with a mallet to see if it would move. It did not. Now after 300 hot experimental hand-loads there is NO gas leakage. This gas block fit under a Midwest Industries SS type extended hand-guard without touching.

Super nice fit on Black Hole Weap bbl

I installed this VLTOR low profile, side clamping, gas block on a standard profile, stainless, 24 inch long, 6.8mm SPC, Black Hole Weaponry barrel. The fit was nice and snug even before I tightened the bolts. It stayed aligned while tightening. I then fit a rifle length gas tube and covered the whole set-up with a Midwest Ind. SS, 15 inch free floating hand-guard. This gas block fit underneath just fine. It fired and cycled from round one and I now have 300 rounds through the rifle without a single problem. No leaks of any gas. Alex Clark Homer, Alaska

Great Low-Pro Steel Gas Block

I used this on a 16" Mid-Length Gas System AA 6.5 Grendel barrel. I have fired it in both extreme heat at 100 degrees F, down to 18 degrees F with never a malfunction using various loads. This is one of the best steel low-pro gas blocks on the market. The gas tube does fit tightly, which is a good thing for a reliable gas circuit. Loc-tite is your friend when tightening the screws after testing that you have a proper gas circuit. Read the limitations as to what handguards it will not fit under. The finish and logo are features that go above what other manufacturers offer on most of these types of products, which shows that VLTOR goes further in making a great part. Every VLTOR product I have used so far shows a higher attention to workmanship, finish, and functionality.

Perfect!

After having a nasty experience with the "set screw style" gas block I decided to use a clamp on and went with the Vltor. This gas block is very well made. It was a bit tight for the gas tube to fit in which is normal and once the tube was in everything with very smoothly. Make sure to loctite the screws and this thing wil stay forever. I put this underneath my TRX Extreme which is extremely skinny. This will fit under most handguards. I don't believe this gas block is made to fit under the DD Lites and Omegas, and also the LaRues. For the handguards it is made to fit under, I'd prefer no other.

No problems

I have this installed on my SPR build which has a White Oak Armament barrel with Midwest Industries free float handguards and everything works perfectly. My rifle cycles correctly and the bolts for the gas block has not come loose. I did however use vibra-lock on the threads.