Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
SLR Sentry 7 .750 Clamp On Adjustable Gas Block
As Low As $141.64 Save Up to $11.18
View Product
Compare (0)
Most Helpful Positive Review Awesome Adjustable gas block
Installed this gas block on my 16" PSA barrel that was over gassed. The SLR Agj gas block really calmed my AR down. The clicks are positive and felt. Side note, if you buy a T-handle for adjustment under hand guard, it is a 2mm.
Show
Sort by
Filter by

SLR Adjuatable Gas Block

by Thomas Hoffman, Verified Owner from IN, United States Written on October 2, 2025
Not a bad gas block. No carbon lock on set screw after 400 to 500 rounds. Lightweight. A bit over priced for no more than it is.
Would recommend: Yes
Was it helpful to you? Yes | No

Pretty solid

by Three percenter, Verified Owner from CA, United States Written on September 1, 2021
Gas block clamps well, clicks are easily adjustable, and the fact it can be removed is also a plus. Price is definitely up there, especially for the one I received which has a chip through the black finish. I blame that on packaging. They put the allen wrench in the same bag as the block, which most likely marred it up, hence minus 1 star. In my opinion it's best to always separate the tools from the product. Works well though
Best Used for:
  • Pissing off Libs
Would recommend: Yes
0 of 2 found the following review helpful.
Was it helpful to you? Yes | No

SLR Adjustable gas block

by Bri, Verified Owner from OR, United States Written on May 25, 2021
SLR adjustable 15 settings gas block are fantastic gas block with the titanium are the best gas block i have used. Each setting on the gas block clicks into place and stay in place witch not all do. The titanium is lite weight and very strong too with a good look too
Would recommend: Yes
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Best Adjustable Gas Block

by Jody, Verified Owner from MO, United States Written on April 24, 2021
I used this gas block to fix the cycling issue I was having with my blackout pistol. It did the trick and fit nicely under my Geissele rail. The adjustments have a nice positive click to them. It also comes with the small Allen key for this. I would likely buy the longer Allen key for future use.
Pros:
  • Low profile
  • easy to install
  • ease to use
Cons:
  • None
Best Used for:
  • Supressed rifles
Would recommend: Yes
Was it helpful to you? Yes | No

Sentry 7 Adjustable Gas Block

by Luke, from MI, United States Written on December 10, 2020
Buy once, cry once, spend the money and get the SLR! I’ve used these set screw and clamp on models for multiple suppressed builds. SLR makes quality stuff and their customer service is top notch too. The fine tuning of these gas blocks with the great feeling ‘audible clicks’ is my favorite part about them. Dial it in and forget it. Good to go!
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great product!

by Fivestandfan, Verified Owner from IL, United States Written on September 29, 2020
Well machined, finish is excellent, part was quite a bit more compact than i thought but fits like a glove and provides a clean look as well as a lot of clearance for the brigand handguard it is installed under. (dpms g2 ar10 build)
Would recommend: Yes
Was it helpful to you? Yes | No

Best adjustable gas block

by Odie, from WA, United States Written on June 18, 2020
so this is the 4th build I have done useing the SLR gas block. It has become by far my go to part for anything i plan on supressing. The range of adjustment means that you can really dial in the gas sytem to suit your needs.
Pros:
  • Quality
  • Adjustability
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Rugged, reliable, excellent

by Rob K., Verified Owner from NV, United States Written on July 2, 2019
I use SLR's Sentry adjustable blocks (almost) exclusively for my project builds for the last several years. Unlike some other adjustable blocks, no messing about with double set screws, single set screws, impossible or difficult to access adjustments. The SLR Sentry adjustable blocks are simple to use, simple to access for adjustments, and very rugged in use.
Pros:
  • Quality
  • easy to use
  • rugged
  • reliable
Cons:
  • None
Best Used for:
  • Suppressor
  • Tuning
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great but expensive

by Jon, Verified Owner from MN, United States Written on April 5, 2019
This thing is one of the nicest gas blocks I have used. Light weight and study with very positive clicks. Highly recommended from me. It’s kinda expensive though but I think it’s worth it for what you get
Pros:
  • Funtion
  • Wight savings and sub min grops
Cons:
  • price
Best Used for:
  • guns
Would recommend: Yes
Was it helpful to you? Yes | No

Excellent Adjustable Gas Block

by Chase OBrien, Verified Owner from OK, United States Written on October 23, 2018
I’ve ordered and installed 2 of these blocks now, and I love them. The first one went on a DPMS LR-308T (16” carbine gas), which is extremely over-gassed.

The fact that they can be easily disassembled for cleaning and/or maintenance (if it’s ever necessary...) is a big plus for me.

Detents are positive and audible, also a plus in my book. No set screws to loosen and leave you stuck.
Pros:
  • Detents
  • Easily disassembled
Cons:
  • None
Best Used for:
  • Anyone who needs an adjustable gas block
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?