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Questions & Answers
Will this work for an ar10? Manufacturer Answer

If your AR10 has a .750" gas block journal, then it is compatible.

by Griffin Armament, Manufacturer, June 15, 2022
Will this fit heavy contour .750? Expert Answer

Yes it should.

by Ryan Tarczynski, Gear Expert, August 2, 2021
Customer Reviews
Helpful Positive Review
Great product by Killer B, August 17, 2020
The fit and finish on this thing is really great. Installing the gas tube and roll pin was quick and easy. Fit on the barrel with no slop. Allen screws tightened it up and gave it a solid feel. Highly recommend.
2/2 found this helpful
Helpful Positive Review
absolute perfection by Robert Shields, Verified Owner, August 8, 2020
Geissle who? I own a geissle block with a bomb proof install and this here primo block set up just as good. Came with all of the hardware to pin it and lock it down. Absolute zero movement! It did not come with the drill bit to drill the hole no ...
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4/4 found this helpful
Helpful Positive Review
Pin it like a pro! by Skscowboy, Verified Owner, August 10, 2020
This Griffin Armament gas block makes it easy to drill the correct hole to pin it to the barrel like a mil spec one is so it will not back off when you need it most. I Used a drill press and it made easy work of the drill chore. Be sure to use a top...
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3/3 found this helpful
Helpful Positive Review
Griffin gas block by Darklowrider, Verified Owner, May 15, 2020
This is an excellent product. Does exactly what it should. Easy installation. The machining is spotless, the coating should last for decades. I’m vary happy with this purchase and I would buy it again.
2/2 found this helpful
Helpful Positive Review
Great upgrade by Morgan, September 26, 2020
When deciding to put a quad rail on my ar I knew I needed a new gas block. After much research I chose this product. I couldn’t be happier with my purchase. Great quality and functions perfectly. I would definitely buy again and recommend to anyone l...
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1/1 found this helpful
Helpful Positive Review
awesome stuff by Robert Shields, Verified Owner, July 31, 2020
Excellent product. Would definitely recommend to anyone looking for an awesome gasblock. Top quality top manufacturing service what else can I say. Get em while you can. 200 characters long hhhhhhhb
3/3 found this helpful
Read All 8 Reviews
Gas Block Journal Size-Diameter:
.750 in
Condition:
New

Code: 28N-RGB-GAPCBCA-GAPGB

MPN: GAPGB

UPC: 791154082560

List: $54.95Save $2.95
$52.00

Product Info for Griffin Armament Primo Gas Block 416R Crucible Alloy

The PRIMO Gas Block is a low profile billet machined, .750 inch. ID block, made from nitrided 416R crucible alloy steel. The block has two provisions for mounting, set screws and / or pinning. The included splined pin allows qualified gunsmiths and experienced builders the option of having a military style secured gas block. A 1/8 inch carbide drill bit and three ton press are recommended for pinning. Knurl grip cup pointed fasteners ensure a secure attachment to host barrel. The PRIMOs pre-drilled hole helps locate the drilling operation on pre-dimpled barrels for fixture free installation. 416R Crucible Alloy Steel. QPQ Nitride finish. .750 inch gas block diameter compatible. Low profile design. Included splined pin. Knurl grip - cup pointed fasteners. Inlcuded hex key. Included gas tube roll pin. Pre-drilled for ease of barrel pin installation.image

Specifications for Griffin Armament Primo Gas Block 416R Crucible Alloy:

Manufacturer: Griffin Armament
Fabric/Material: 416 Crucible Alloy Steel
Gas Block Journal Size-Diameter: .750 in
Condition: New

Package Contents:

  • Griffin Armament Primo Gas Block 416R Crucible Alloy

Griffin Armament Primo Gas Block 416R Crucible Alloy Orderable Models

List of Orderable Models

  • Griffin Armament Primo Gas Block low pro, GAPGB , MPN: GAPGB , UPC: 791154082560 , Code: 28N-RGB-GAPCBCA-GAPGB

Griffin Armament Primo Gas Block 416R Crucible Alloy Unavailable & Discontinued Models

List of Unorderable Models

  • USED Griffin Armament Primo Gas Block low pro, GAPGB, EDEMO1, Used, Condition Like New, Inspect and Rebox , MPN: GAPGB-EDEMO1 , Code: 28N-RGB-GAPCBCA-GAPGB-EDEMO-RE-A
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