Upgrade your Krinkov build with the precision-engineered MSR Hinge Block, specifically designed for Arsenal Bulgaria milled receivers in 7.62x39mm and 5.56x45mm calibers. This essential component delivers reliable folding stock functionality, transforming your short-barreled rifle into a compact, maneuverable platform ideal for tactical applications, transport, and storage without sacrificing strength or performance. Key Features Caliber-specific compatibility - Engineered exclusively for 7.62x39mm and 5.56x45mm Krinkov configurations on milled receivers, ensuring perfect fit and function with Arsenal Bulgaria originals. Durable construction - Manufactured to meet rigorous military-grade standards for long-term reliability under demanding conditions. Optimized dimensions - Compact profile measuring 1.4 inches in length, 1 inch in width, and 1.25 inches in height with a total weight of just 3.2 ounces for minimal added bulk. Standard interface - Works seamlessly with common AKM barrel journals and accepts standard dust covers for straightforward integration during builds or upgrades. Benefits for Firearm Enthusiasts Whether you're assembling a custom Krinkov or maintaining an existing Arsenal rifle, this hinge block solves common pain points like stock instability and excessive length. The folding mechanism provides quick deployment while maintaining rock-solid lockup when extended, enhancing handling in tight spaces and improving overall versatility for range use, competition, or field operations. Specifications SKU: 35174 Weight: 3.2 oz Length: 1.4 in Width: 1 in Height: 1.25 in Receiver Type: Milled (Arsenal Bulgaria Krinkov) Compatible Calibers: 7.62x39mm, 5.56x45mm Why Choose This Product Crafted for builders who demand authenticity and performance, this hinge block offers superior material engagement and security compared to generic alternatives. Its precise tolerances reduce play in the folding joint, delivering consistent, dependable operation every time you deploy or fold your stock. Invest in quality components that match the heritage of your Arsenal Krinkov. Add the MSR Hinge Block to your project today and experience the difference in fit, finish, and functionality.