Spuhr R-315 MP5/HK33/53 Low Stock Assembly

Manufacturer's Website

Description

Introducing the Spuhr R-315 MP5/HK33/53 Low Stock Assembly. A six-position adjustable stock system designed for HK MP5, HK33 and HK53 platforms, as well as compatible clones. Based on the established R-310 design, the R-315 adds a quick-detachable cheek piece that allows the factory iron sights to remain usable when required. The stock adapter is machined from a solid billet of aircraft-grade aluminium and incorporates an integrated buffer. This provides a durable foundation for the assembly while keeping the overall design compact and functional. The stock can be adjusted through six positions to accommodate different user preferences and equipment setups.

A non-reciprocating cheek piece is integrated into the design to help position the users eye in line with mounted optics. Additional cheek-piece heights are available, while the quick-detachable design makes it possible to revert to the factory sight line without removing the entire stock assembly. The R-315 provides an adjustable overall length ranging from approximately 190 mm to 270 mm (7.48"-10.62"), with a length of pull ranging from approximately 290 mm to 370 mm (11.42"-14.57"). This adjustment range allows the stock to be configured for different body sizes, shooting positions and equipment combinations.

With a total weight of approximately 455 g (16 oz), the Spuhr R-315 combines adjustable ergonomics with a robust aluminium construction. Its design is intended to improve fit and stability while maintaining compatibility with both optical and factory iron-sight configurations. Manufactured by Spuhr, the R-315 Low Stock Assembly offers a durable and highly adjustable stock solution for HK MP5, HK33, HK53 and compatible clone platforms. Its six-position adjustment, quick-detachable cheek piece, integrated buffer and solid billet aluminium adapter make it a versatile replacement stock system for compatible firearms.

Features

• 6-position adjustable stock
• Compatible with HK MP5/HK33/HK53 and clones
• Stock adapter machined from solid billet aircraft aluminium
• Fully adjustable for length and has a non-reciprocating cheek piece

Specifications