Seekins Precision AR-15 Select Adjustable Gas Block - Set Screw - .875"

The Seekins Precision Select AR-15 Adjustable Gas Block gives you true tool-free, on-the-fly gas system adjustment, without fiddling with keys or partially disassembling your rifle. Built for a .875" gas seat, this gas block lets you flip a switch to move between suppressed and unsuppressed settings instantly, even out in the field.

Features:

• 40 positions for fine adjustment
• Tool-free gas selector switch
• .875" gas seat diameter
• Set screw mounting to the barrel
• High strength tool-steel construction
• Melonite finish for corrosion resistance
• Suited to suppressed and unsuppressed use
• No disassembly required to adjust in the field

Setting up the block for suppressor use starts with the suppressor installed: dial the fine-tuning adjustment to one click above the setting that reliably locks the bolt open on an empty magazine, then set the selector switch to its left-most position as your minimum gas setting. If the rifle gets dirty or you remove the suppressor, bumping the switch to the right adds gas instantly, with no cleaning or disassembly required to keep the rifle running.

Seekins Precision started in 2004 with a single product and has since grown to more than ten major product lines, including complete rifles, scope rings, and gas system components.