The super durable, chemical-resistant lower support module allows you to hold your firearm securely for cleaning, assembly, and repair. This support module slides easily and fits firmly into its corresponding Sylvan Arms cleaning plate thereby safeguarding against finish and structural damage that may be brought on by the application of vise pressure such as scratches, dents, twists, and other structural distortions. Features: Works with lower receivers Solvent-resistant polymer construction - this lower support module is durable and highly resistant to chemicals including gun solvents and cleaners Lightweight yet durable