{"product_id":"b5-sierra-k-stock-coyote","title":"B5 Systems SIERRA K Stock – AR-15\/M16 Mil-Spec Buffer Tube","description":"\u003cp\u003eThe B5 Systems SIERRA K Stock delivers stable shouldering and quick length-of-pull adjustment for AR-15 and M16 pattern rifles. Its rigid polymer construction and wide contact surface reduce felt recoil and improve cheek weld consistency, making it effective for both rapid transitions and precision shooting. The streamlined profile prevents snagging on gear or clothing during dynamic movement.\u003c\/p\u003e\u003cp\u003eThis stock attaches to mil-spec carbine buffer tubes and features a friction-lock system that eliminates rattle while allowing fast position changes. The reinforced polymer body resists impact damage and chemical exposure. Textured contact surfaces provide secure purchase in wet conditions. Coyote tan finish coordinates with FDE and desert camouflage patterns.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Collapsible carbine stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M16 (mil-spec buffer tube)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Reinforced polymer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Coyote tan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable:\u003c\/strong\u003e Yes (multiple length-of-pull positions)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Slides onto mil-spec carbine buffer tube, requires stock lock nut removal\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B5 Systems","offers":[{"title":"Default Title","offer_id":47936577569023,"sku":"B5SRK-1657","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5526584.jpg?v=1766482990","url":"https:\/\/doublestackstore.com\/products\/b5-sierra-k-stock-coyote","provider":"Double Stack Store","version":"1.0","type":"link"}