The FS1913™ is a low-profile, left side-folding strut designed for compatibility with all platforms utilizing an M1913 (Picatinny) interface at the rear of the receiver. This brace provides a solid lock-up when extended, ensuring reliable performance in a compact design. Choose between a lightweight polymer strut (FS1913) or a more robust 6061 aluminum strut (FS1913A) depending on your specific needs.