Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style

Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style - Gas Block for AR-15 - view 1
Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style - Gas Block for AR-15 - view 2
Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style - Gas Block for AR-15 - view 3
Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style - Gas Block for AR-15 - view 4
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Cross Machine Tool

Overview

The Cross Machine Tool J.a.g. Gas Block is designed for a .875" diameter gas system and features a set screw style for secure mounting. Constructed from steel and finished with nitride, this gas block ensures durability and reliable performance under varying conditions. This gas block is commonly found in builds aiming for a robust and straightforward gas system without the complexity of adjustability.

Specifications

MPNCMT-JAG-875
Mounting TypeClamp-On
Gas Block Diameter.875
MaterialSteel
FinishNitride
AdjustableNo

Available Merchants(1)

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$29

Price and stock

Availability is good for the Cross Machine Tool J.a.g. Gas Block - .875" - Set Screw Style: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $29.45, so there haven't been real sales lately. Buying today, the lowest price is $29.45 at Primary Arms, which matches the best price we saw in August.

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