Finally a way to mount 1913 stocks/braces to your favorite full-size MP5 clone! This adapter will fit the Standard/Full Size MP5 as well as HK33 (556). It has a Picatinny rail machined on the rear which allows you to install 1913 style stocks/braces! Cheek wield is adjustable using any stock/brace by simply attaching the stock/brace higher or lower on the Picatinny rail!
*This adapter is designed to fit super tight and installation will most likely require a rubber mallet to drive in place.