PSA 10.5" 300blk Upper - USED PSA 10.5 300blk Upper with CH & BCG - Upper has about 600 rounds on it and has been absolutely stellar. All NFA Rules Apply. Features: Magpul MBUS Gen 1 BUIS Streamlight Protac with pressure pad Burris Red dot on riser MSRP: Was: Now: $250.00 Add to Cart