Reviews & Ratings for Superlative Arms Gas Block .750 in Solid Set Screw — 45 reviews — Page 1

Superlative Arms is the best by far on adjustable gas block. They have a great design with ease of use for in feild adjustment.

I ordered the .750 gas block and received one that was machined incorrectly, measuring .728" instead of the advertised .750.

This is disappointing, especially given Superlative Arms reputation for quality machining and tight tolerances. When you’re buying precision components, basic dimensional accuracy isn’t optional—it’s the entire point of paying for a premium product.

That said, Optics Planet handled the situation professionally. Their customer service assured me they will physically inspect and measure the replacement gas block before shipping it out, which I genuinely appreciate. That level of accountability matters, especially with precision components.

Quality control should catch issues like this before products ever ship, but it’s good to see the retailer stepping up to make it right.

Pros:

Excellent design concept

Strong industry reputation

Innovative bleed-off system

Good customer service response from Optics Planet

Cons:

Out-of-spec machining (.728 instead of .750)

QC failure on a precision component

Overall:
Great design on paper, but this unit missed basic manufacturing tolerances. While the initial experience was frustrating, Optics Planet's response and proactive inspection of the replacement reflects solid customer service. Hoping the replacement reflects the quality the brand is known for.

Love it looks and works great. Great quality. Super easy to install.

Looks good and fits perfect excited to get this out to the range.

Install was easy, and tuning wasn't difficult at all. I really enjoy the bleed off

Bought this for my ar10 build and man, this baby has my gas so well tuned i looked by and saw a pile of brass on the 3 o clock once I had made my adjustments. Quality is great and it’s a set screw so you don’t have to worry about it moving or falling out! Very well done

Works great to tune your gas for suppressor use. Easy install, easy adjustment

Fits perfect. works just fine. Dialed in the perfect amount of gas for my build.

This is the only gas block that we will use for our builds. And this color is gonna appear perfectly with the OD GREEN we are using. Just waiting to receive it in the mail.

Great product! The detents are solid and easy to feel when you are adjusting it! It works well with a suppressor!