The R-315 adapter and buttstock set for the MP5 SMG series offers the features of the proven R-310 design (also available in the manufacturer's offer), but with a quick removable cheek pad which allows the use of the standard iron sights.The adapter is made of aircraft-grade aluminum, it has an integrated buffer tube with a stock that can be set in 6 positions. The cheek pad is not adjustable (additional heights are also available), but sets the eye of the shooter in a single axis with optical sights.
Thanks to improved ergonomics, the use of the adapter significantly reduces the recoil of the weapon, ensuring the accuracy of shots even when shooting with automatic fire. The adapter can be mounted on the MP5, HK33 and HK53 (and their clones).

According to the information available on the Internet, the adapter also fits, after minor modifications, on MP5 models using the GBBR system.

Producer price: 260 Euro

Sources: airsoft-milsim-news.com, spuhrwebshop.com, thefirearmblog.com