Product Description Chambered in 300 Blackout, this rifle upper is completely built and ready to be put on a lower. Includes Bolt Carrier Group. TACFIRE PISTOL UPPER RECEIVER at Guns.com Browse all Guns.com deals $302.99 In Stock at Guns.com Price verified today Buy Now at Guns.com Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Upper Receivers Brand Tacfire MPN 232561 Gun Parts Tacfire