EBR STRIPPER CLIP SIGHT BASE - EL MODEL: M14SCSB/EL The M14SCSB/EL (Stripper Clip Sight Base - Extended Length) is a 1913 Picatinny Rail insert specifically designed for use on Mil-Spec M1/M14 rifles. The base aligns with the EBR chassis top cover Picatinny rail and is ideal for mounting lightweight reflex optics. Precision machined from ordnance grade steel Replaces existing stripper clip guide Permits in-line mounting of scoped optics & reflex sights Allows clear through access to the ejection port Durable Black Nitride finish Made in the U.S.A.