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CMMG 8.6 Blackout 12.5″ Barrel Sub-Assembly, 4140CM, Black Nitride Finish

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CMMG 33D430C Barrel Sub-Assembly 8.6 Blackout 12.50″ Black Nitride 4140CM Barrel

Kick off the 8.6 Blackout rifle build with a CMMG 16.1″ barrel featuring the sleek, corrosion-resistant nitride finish. Compatible with CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers. Accepts 0.750″ diameter gas blocks.

$205.99

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1 in stock

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CMMG 33D430C Barrel Sub-Assembly – 8.6 Blackout, 12.5″, Black Nitride, 4140CM

Looking to drop serious stopping power into your next AR build? 🔧 The CMMG 33D430C Barrel Sub-Assembly is your go-to solution when you want hard-hitting performance with premium-grade construction.

This 12.5″ barrel is chambered in 8.6 Blackout – purpose-built for energy transfer, excellent subsonic capabilities, and superior terminal ballistics. Whether you’re hunting hogs, prepping for a home defense setup, or just want to push the limits at the range, this barrel delivers.

Built to Perform:

4140 Chrome Moly (CM) Steel construction – trusted for its strength and heat resistance
Black Nitride finish – boosts corrosion resistance, increases hardness, and smooths out wear points
Medium taper profile – balances weight and accuracy
Threaded muzzle (5/8×24) – ready for your favorite suppressor or muzzle device
Optimized for subsonic and supersonic 8.6 BLK loads

The 12.5″ barrel length is the sweet spot for maneuverability and ballistic performance, giving you tight groups downrange without sacrificing mobility. 💥

Whether you’re a seasoned builder or upgrading your go-to rig, the CMMG 33D430C delivers rock-solid reliability with the punch only 8.6 Blackout can provide.

📦 Drop it into your upper and feel the difference. Tactical dads, this is the barrel you’ve been waiting to run.

👉 Order yours now — precision, power, and performance are just a click away.