Check the listing for details. Holosun 507 Comp Red Dot (HS507COMP) Package w/ Picatinny Mount. Color: Black, Condition: New. Listed at 389.98 USD. 507Comp-RD handgun sight features a large 1.1 x 0.87 objective lens for enhanced shooting performance and Holosuns new Competition Reticle System (CRS) with Holosuns 650nm Red Super LED and up to 50k hour battery life with a 1632 cell. CRS is an enhanced multi-reticle system with four components including a precision 2 MOA dot, an 8 MOA circle, 20 MOA circle, and 32 MOA circle with multiple combination settings to suit individual shooter preference. 507Comp-RD is made from 7075 aluminum with an industry standard footprint, and includes Shake Awake technology. This package comes with a Holosun Picatinny Mount. 507CPICMOUNT Adapter mount for Holosun 407C/507C/508T to picatinny rail. This mount uses the RMR pattern footprint for optic attachment.