CNC machined to true Picatinny dimensions, these cut-to-length blanks provide unlimited accessory or scope mounting options for custom applications. Bases are left undrilled for fitting to guns with non-standard hole spacing or those needing special ring positioning. Precision crossslots easily accept Picatinny or Weaver-style accessories and scope rings. Open top design reduces weight without sacrificing strength. Available in 5-5/8", 9", and 18" lengths. Mfg: Mounting Solutions Plus SPECS: 6061 T6 aluminum, natural, matte finish. 5-5/8" (14.3cm), 9" (22.8cm), or 18" (45.7cm) long, .206" (10mm) slot width, 5/8" (1.59cm) high from top of receiver to bottom of dovetail. Mounting holes not drilled. Flat bottom is not radiused for round receiv