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AR-15/M16 PICATINNY RAIL GAS BLOCK Reviews & Ratings

Compact gas block clamps securely to barrel with a unique three-point attachment system to provide a solid accessory mounting platform and ensure proper gas system alignment for reliable cycling. Precision machined from high-grade 6061 T6 aluminum for an ideal combination of strength and low weight, with an integral MIL-STD 1913 Picatinny rail on the topside. Anchors to the barrel with a pair of hex-head setscrews on the underside, plus a third screw on top to ensure a superior gas seal and resist unwanted movement that can impair gas system function. Streamlined design has clean, good-looking, angular lines with all exposed edges radiused to eliminate sharpness. Mil-spec hardcoat anodized for superior surface strength and wear resistance with an even, matte black finish that matches most manganese phosphate Parkerized barrel finishes.

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2 Stars

Reviews Summary

The AR-15/M16 PICATINNY RAIL GAS BLOCK generally performs well, offering reliable functionality and an attractive finish. However, many users note alignment issues with rail heights and weak set screws as drawbacks. While it's considered affordable and effective for everyday use, some recommend opting for clamp-on styles for better grip and performance.

What Reviewers Are Saying

Product Performance

65%

Most reviewers found the gas block to function well once properly installed, noting its functionality exceeded expectations overall. Users appreciated the design for its effective locking system with multiple set screws, though some experienced issues due to alignment mismatches.

Alignment Issues

50%

Several customers reported that the rail height for the gas block was not aligned with their receivers, leading to aesthetic and functional discrepancies. This theme suggests that while the product works well, buyers should be aware of potential alignment challenges.

Set Screw Weakness

55%

A significant number of reviewers mentioned the inadequacy of the set screws, highlighting that they can strip easily and may not grip the barrel securely after rapid fire use. This concern led some users to recommend alternatives like clamp-on blocks for better security.

Build Quality and Material

40%

The overall build quality received mixed reviews, with some users appreciating the lightweight material while others suggested that steel would have been a better choice for durability. There were also mentions of the product's finish matching well with specific barrel brands.

Value for Money

70%

Reviewers frequently noted the affordability of the gas block, often declaring it as hard to beat for its price. Many felt it provided good performance for the cost, making it appealing for budget-conscious buyers seeking an effective solution.

Customer Service Experience

30%

A few users expressed dissatisfaction with customer service, stating they received no response after reaching out for support. This lack of communication could affect the overall buying experience and raises concerns regarding post-purchase support.

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nice product

it worked perfectly on my pencil barrel. Why didnt someone make this long ago.

Works as is supposed to

The only issue with this is with the handguard cap Colt had on my department's Commandos not the gas block itself. The factory handguard cap had a short ledge preventing the block from sitting flush on the cap. The factory front sight post was recessed to accommodate the cap. Once we replaced the caps it performed as advertised.

Tight fit, quality craftsmanship

This gas block worked perfectly for me, and I love the 4 set screws on bottom. They go in at an angle and all four of them provide a tight lock onto the barrel. I would have given it 5 stars, but the rail didn't line up with the upper receiver rail. It's about a half inch lower so you won't get the mono-rail look if you're adding a free float to your setup.

good product

Fit nicely however it would be better if made from steel set screws do not grip barrel very well and after rapid fire it moves forward suggest drilling shallow holes for the set screws in barrel to keep it from moving. Works great and looks good did everything I hoped it would do.

Good block for the money.

We have used these a few times for builds and the preform well when installed correctly. For the price they are hard to beat. The finish matches well with RRA barrels. For an everyday affordable shooters this block would be great.

Rail is shorter that the traditional

I would have given this a 5 star if the rail lined up with the free float rail. It's about half an inch lower. I with I knew that before I bought it cause it makes a big difference on how it looks and function.

Works fine for a low hight railed block

First build for me, I have had no problem with set screws, or aluminum bloc, just treat them appropriately. I'm going to change it out though for a "rail Height" block, to enable a rail height sight.

Extra part needed

Don't forget to order a 5/64 x 1" gas tube roll pin which is not included. Works well enough, nothing special. But the price is right. Mine did not have the screw on top just 4 on the sides. I had to shorten mine to fit a 1 1/4" gas block area on the barrel I was using thus loosing one set of side screws. I tapped the hole on the bottom 10-32 that was drilled for the gas port. I added an additional set screw there and used a ball end mill to make a slight indention on the barrel for the set screw to grub on to.

Save Your Money

Overall looks are good, and it has a nice finish. However, the 3 set screws are weak, and strip very easily. I emailed Doublestar twice, and they do not reply. Overall, you would be better to choose a clamp on style block, not a set screw.