PSA 8.5-inch 300 Blackout Pistol Tuned for a Ridgeback Sahara 300

A PSA 8.5-inch 300 Blackout pistol upper with a 7-inch M-LOK rail, tuned to cycle subsonics behind a low-backpressure Ridgeback Sahara 300. The builder pairs a RifleSpeed adjustable gas block with a drilled-out gas port, and the can mounts on a Comstock titanium LPA adapter over a Comstock compact brake. A Holosun ARO gold dot, Streamlight TLR-RM2, CMC 2.5 lb trigger and Radian controls round it out.