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. 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 Package Contents: Griffin Armament Primo Gas Block 416R Crucible Alloy
6 reviews for Griffin Armament Primo Gas Block 416R Crucible Alloy
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Robert Shields –
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
Darklowrider –
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.
Killer B –
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.
Morgan –
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 looking to replace their gas block.
Robert Shields –
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 big deal! I had the bit in my toolbox. Excellent product.
Skscowboy –
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 notch coated drill bit because the barrel will be very hard. I will be ordering more of these.