B5 Systems SIERRA K Stock – ODG (Mil-Spec AR-15/M4)

The B5 Systems SIERRA K Stock delivers a compact, lightweight carbine stock designed for shooters who need minimal length of pull without sacrificing stability. Its reinforced polymer construction provides a solid cheek weld and consistent shoulder contact, improving control during rapid fire and transitions. The streamlined profile reduces snag points while maintaining structural integrity under hard use.

Machined from a single piece of reinforced polymer and finished in Olive Drab Green (ODG), this stock installs on any mil-spec carbine buffer tube without modifications. The friction-lock system eliminates rattle and maintains zero wobble across the adjustment range. Non-slip rubber buttpad keeps the stock firmly seated during recoil.

• Type: Carbine stock, collapsible
• Compatible Firearms: AR-15, M4, and mil-spec buffer tube platforms
• Material: Reinforced polymer
• Finish: Olive Drab Green (ODG)
• Adjustable: Yes (multiple positions)
• Installation: Mil-spec carbine buffer tube, no gunsmithing required