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DOUBLE STAR
AR-15/M16 PICATINNY RAIL GAS BLOCK

841348103820 100004537

Description
Ratings (9)

Ensures Reliable Gas Flow; Models For Three Popular Barrel Diameters

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. Models available to fit three common barrel outside diameters: hard-to-find .625" for A1 barrels, .750" for H-Bar and similar-style barrels.

SPECS: 6061 T6 aluminum, hardcoat anodized, matte black. All models 1.875” (cm) long. Rail heights are measured from top of barrel to top of rail. .625” - 1” (2.5cm) wide, 1.5” (3.8cm) overall height, .600” (1.5cm) rail height. 3 oz. (84g) weight. .750” - 1” wide, 1.5” overall height, .545” (13.8cm) rail height. 2.6 oz. (73g) weight.

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Customer ratings for DOUBLE STAR .625" PICATINNY GAS BLOCK

Number of ratings: 9
From brownells.com: 9
Average rating: 3.4

Save Your Money (15/06/2010)

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.

Good block for the money. (06/07/2010)

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.

good product (29/01/2011)

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.

Extra part needed (17/07/2012)

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.

Works fine for a low hight railed block (19/12/2012)

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.

nice product (06/10/2009)

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

Tight fit, quality craftsmanship (18/04/2012)

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.

Rail is shorter that the traditional (07/07/2014)

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 as is supposed to (19/07/2014)

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.

Read 9 more ratings on brownells.com

49.9 49.9 2 GBP

Product no.: 100004537
DOUBLE STAR .625" PICATINNY GAS BLOCK
Mfr Part: 625GB 841348103820 .625" Picatinny Gas Block

49.9 GBP 4 £49.90 *

Is a 'Call to order' product.

Delivery time approx. 7-14 days.
4 pcs. in the USA warehouse

Specs: Inside Diameter: .625 Make: AR-15 Material: Aluminum Style: Picatinny

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Restrictions

Is a 'Call to order' product.

Description

.625" Picatinny Gas Block

Attributes

Inside Diameter: .625 Make: AR-15 Material: Aluminum Style: Picatinny Delivery weight: 0.045kg

Item details

Made in USA
US export classification: 0A501.x

Product no.: 100004536
DOUBLE STAR .750" PICATINNY GAS BLOCK
Mfr Part: 750GB 841348103837 .750" Picatinny Gas Block

49.9 GBP 12 £49.90 *

Is a 'Call to order' product.

Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse

Specs: Inside Diameter: .750 Make: AR-15 Material: Aluminum Style: Picatinny

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Upgrade your AR-15 with DOUBLE STAR's .625" Picatinny Gas Block 🎯 Lightweight aluminum, hardcoat anodized for durability. Perfect fit & easy install. Get yours now! 🔧🛠️

Description
Ratings (9)

Ensures Reliable Gas Flow; Models For Three Popular Barrel Diameters

More...

Customer ratings for DOUBLE STAR .625" PICATINNY GAS BLOCK

Number of ratings: 9
From brownells.com: 9
Average rating: 3.4

Save Your Money (15/06/2010)

Good block for the money. (06/07/2010)

good product (29/01/2011)

Extra part needed (17/07/2012)

Works fine for a low hight railed block (19/12/2012)

nice product (06/10/2009)

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

Tight fit, quality craftsmanship (18/04/2012)

Rail is shorter that the traditional (07/07/2014)

Works as is supposed to (19/07/2014)

Read 9 more ratings on brownells.com

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