The Sierra K is a purpose-driven compact stock optimized for use on PDW and compact weapon systems. It reduces overall size while maintaining a slim cheek profile for a lower, more streamlined interface. The design includes a snag-free adjustment lever, limited-rotation QD point, internal tensioners, and an anti-slip buttpad to support secure shoulder purchase. Mounts via a shortened compact Mil-Spec receiver extension for compatibility with compact receiver setups.
Key Specifications
- The color is Olive Drab Green.
- Designed to fit AR Rifles.
- The model is Sierra K.
- Classified under Stocks & Buffer Tubes.
- The product type is Stock.
- The width measures 1.50″.
- The weight is 6.60 oz.
- The length measures 5.63″.
- The height measures 3.80″.
- Mounts via a shortened compact Mil-Spec receiver extension.
With its compact footprint and low profile, the Sierra K brings practical handling improvements to short-barrel and PDW-style builds. It emphasizes ergonomic alignment, secure sling attachment, and a streamlined interface for users who prioritize compactness and reliable function in confined or transportable setups.





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