HK Slimline Retractable Stock, Black Polymer

The HK Slimline Retractable Stock (brand part no. 50237550), new from HK Germany, is a black polymer collapsible stock that fits both commercial and mil-spec AR-15/M16 buffer tubes. It’s marked with the HK logo and is the same stock issued on Heckler & Koch’s own specialized HK416 and MR556 rifles, bringing genuine HK hardware to a builder’s own AR platform. For a shooter who wants factory HK equipment on a personal build rather than an aftermarket copy, this Slimline stock is the direct source.

Key Specifications

• Fits both commercial and mil-spec AR-15/M16 buffer tubes.
• Molded from black polymer.
• Retractable collapsible design.
• Marked with the HK logo.
• The same stock issued on HK’s HK416 and MR556 rifles.

Frequently Asked Questions

Does this stock fit a standard AR-15 buffer tube? Yes, it’s compatible with both commercial and mil-spec buffer tube diameters.

Is this a genuine HK part? Yes, it’s made by HK Germany and marked with the HK logo, the same stock issued on the HK416 and MR556.

Buy the HK Slimline Retractable Stock

Bring genuine HK hardware to your own AR build. Order it from our Heckler & Koch / H&K lineup, part of our AR15 stocks, forends, and forearms selection, at our Lubbock, Texas gun shop as soon as it’s ready to ship.