The JE AR15 Polymer Vice Blocks are essential tools for any AR-15, M16, or M4 enthusiast. Constructed from heavy-duty polymer, these vice blocks provide safe clamping for your firearms during maintenance and assembly. Designed for the AR-M16 platform, they are solvent-resistant to ensure durability. This upper and lower combo set features a sleek black finish, making it both functional and stylish. Upgrade your gunsmithing toolkit with these reliable vice blocks, perfect for any gunsmithing task.