The B5 Systems AK stock 5.5mm variant is the perfect upgrade for your rifle, providing a smooth drop-in replacement for the factory 5.5mm folding stock. It securely mounts to the folding trunnion using the factory's 5.5mm pin, ensuring a precise and stable fit. This stock is designed to enhance ergonomics with an adjustable length of pull, allowing for a personalized, comfortable shooting experience. It also comes equipped with both QD and fixed sling mounts, an optic rail cutout for added versatility and a cushioned buttpad for extra comfort during extended use. Proudly crafted in the USA, this stock is built from durable composite materials and features robust steel hardware for reliable performance and long-lasting durability. Collapsible length of pull adjustment allows for easy customization of the stock length to suit individual user preferences and enhance comfort Features an optic rail cut-out for enhanced compatibility Cushioned nonslip butt pad improves comfort and stability during shooting, reducing impact and enhancing shoulder contact Fixed sling mounts and steel anti-rotational QD mounts offer reliable, secure attachment points for slings Durable composite material enhances the overall toughness and longevity of components, offering protection in harsh environments The product mounts to the factory folding trunnion via a 4.5mm pin, some fitment may be required due to the tolerance range of various manufacturers Comes with a limited lifetime warranty for protection against defects The product is manufactured in the USA for guaranteed quality and performance