The Ballistic Advantage Modern Series BABL556020M is an 18 inch rifle-length barrel chambered for .223 Rem / 5.56 NATO and intended for AR-15 platforms. It is machined from 4150 Chrome Moly Vanadium steel and finished with a QPQ corrosion-resistant coating. The barrel uses an SPR contour and incorporates an extended 0.750-inch profile dimension to accept the OPS Inc. 12th model collar and suppressor. A QPQ-coated M4 feed ramp extension is included for consistent feeding.
Key Specifications
- Manufactured by Ballistic Advantage (Modern Series).
- Chambered for .223 REM/5.56 NATO.
- The barrel length is 18 inches in a rifle-length configuration.
- Machined from 4150 Chrome Moly Vanadium steel.
- Finished with a QPQ corrosion-resistant coating.
- Twist specification of 1:7.
- Barrel contour is a Rifle Length SPR profile.
- Features an OPS 12 profile for use with OPS Inc. 12th model collars.
- Muzzle threads are 1/2-28.
- Gas system length is specified as Rifle.
Designed for builders and users who prioritize durability and compatibility, this Modern Series barrel delivers service-grade materials and a corrosion-resistant finish with an OPS 12-compatible profile. Its SPR contour and rifle gas dynamics are suitable for accuracy-focused AR-15 builds and duty-minded applications where robust construction and accessory compatibility matter. The result is a practical, application-focused barrel option for range, competition, and field-oriented assemblies.
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