The MP BSL arm brace for HK94 and MP5 pistols is a lightweight and durable solution designed to enhance single-handed control while maintaining the platform's iconic aesthetic. Engineered by Magpul, this collapsible arm brace features a proprietary polymer construction for exceptional strength and reliability. Its tool-free adjustment system allows for quick deployment and collapse, ensuring seamless usability in dynamic situations. Designed with ergonomics in mind, the brace provides ample surface area for lateral forearm contact, significantly improving stability during firing. An integrated QD sling attachment offers enhanced versatility, while an M-LOK slot expands sling mounting options, making the MP BSL a highly functional and adaptable accessory for MP5-pattern pistols. The product is not compatible with HK91/G3 pattern firearms All applicable ATF, NFA, state and local rules and laws must be followed where relevant The product is proudly made in the U.S.A This tool-free, 1-handed adjustment system includes an ambidextrous rear QD cup, allowing sling tension to be applied while firing to improve stability High-strength polymer and metal construction, offering a balance of lightweight design and rugged durability