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Criterion Barrels 18" Hybrid Contour, Rifle Gas System, 223 Wylde

Criterion Barrels Inc 18" Hybrid Contour, Rifle Gas System, 223 Wylde - Barrel for AR-15 - view 1
Criterion Barrels Inc 18" Hybrid Contour, Rifle Gas System, 223 Wylde - Barrel for AR-15 - view 2
Criterion Barrels Inc 18" Hybrid Contour, Rifle Gas System, 223 Wylde - Barrel for AR-15 - view 3
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Criterion Barrels

Overview

The Criterion Barrels Inc 18" Hybrid Contour barrel is designed for .223 Wylde, allowing for safe chambering of both .223 Remington and 5.56 NATO rounds. Featuring a rifle gas system and a twist rate of 1:8, this barrel provides excellent stability for a wide range of bullet weights, making it a versatile choice for precision shooting. Commonly found in builds that prioritize accuracy and reliability, this barrel is particularly suited for applications where consistent performance is crucial.

Specifications

MPN15180-HY12
FinishPhosphate
Thread Pitch1/2x28
Gas System LengthRifle
Barrel Length18
Caliber.223 Wylde
Barrel ProfileM4
Twist Rate1:8
Gas Block Diameter.750

Available Merchants(3)

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Optics Planet
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$298
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Brownells
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$313
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Primary Arms
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$313
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Build history on GunPartPicker

Builders on GunPartPicker first added the Criterion Barrels 18" Hybrid Contour, Rifle Gas System, 223 Wylde to a build in February 2026.

It was in stock most days in August 2026, but today only Optics Planet has it in stock. It dipped to $297.99 at Optics Planet for a stretch in August 2026, under its usual $313.49, so sales do come around. Buying today, the lowest price is $297.99 at Optics Planet, which matches the best price we saw in August.

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Builds Featuring This Part

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Builds in the community that include the Criterion Barrels Inc 18" Hybrid Contour, Rifle Gas System, 223 Wylde

BuildPartsTotal
PDW 18" 5.56 build
PDW 18" 5.56		24$2112.11
Griffin armament 18" build
Griffin armament 18"		17$1710.45

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