Sbc Cam 300Ar (Solid Roller)

The SBC Cam 300AR (Solid Roller) by COMP CAMS is a precision camshaft engineered for AR-platform rifles chambered in .300 Blackout and other intermediate cartridges. This component is designed for shooters and gunsmiths who demand reliable valve timing and lift characteristics in tactical and hunting builds. The solid roller design reduces friction and wear on the camshaft lobe and lifter surfaces, delivering consistent performance across extended shooting sessions and maintenance intervals.

Engineered with COMP CAMS' proprietary lobe profiles, the SBC Cam 300AR features solid roller technology that minimizes parasitic drag and improves fuel efficiency while maintaining precise lift and duration specifications. The solid roller design—as opposed to hydraulic rollers—provides a fixed mechanical advantage, making it ideal for builds where predictable, non-variable valve actuation is critical. The camshaft is manufactured to exacting tolerances and is compatible with standard AR-15 upper receivers and bolt carrier groups. Its compact footprint (3 x 2.8 x 24.45 inches) and balanced weight distribution ensure smooth installation and reliable cycling in both suppressed and unsuppressed configurations.

The SBC Cam 300AR is best suited for AR builders, gunsmiths, and operators upgrading bolt carrier assemblies in intermediate-cartridge platforms. It performs exceptionally well in subsonic loads and standard velocity ammunition, making it a preferred choice for suppressed tactical rifles and precision builds. Installation requires standard upper receiver work; compatibility with your specific bolt carrier group and buffer system should be verified before purchase. This camshaft is a direct OEM-replacement component for COMP CAMS-equipped uppers and integrates seamlessly into modular AR platforms.