PRIMO Gas Block .625″ 416R

Experience superior tactical performance, engineered precision, and exceptional reliability with the PRIMO Gas Block .625″ 416R. Crafted to exact industry standards, this product delivers uncompromised durability and effectiveness in the field.

Features & Performance Overview

The PRIMO Gas Block .625″ 416R is designed for tactical operators, target shooters, and firearm enthusiasts seeking peak functionality. Every component undergoes rigorous testing to guarantee durability, smooth operation, and optimal safety.

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Detailed Product Description

The PRIMO Gas Block is a low profile billet machined, .625″ ID block, made from 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″ carbide drill bit and three ton press are recommended for pinning. Knurl grip cup pointed fasteners ensure a secure attachment to host barrel. The PRIMO’s pre-drilled hole helps locate the drilling operation on pre-dimpled barrels for fixture free installation.

Not compatible with Griffin’s HEDP barrels. Compatible gas block can be found here.

• 416R Crucible Alloy Steel
• Black Oxide finish
• .625″ 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