The Department of Defense (DOD) is seeking proposals for a research topic titled "Thermal Barrier Minimal Deflection Handguard" under the SBIR program. The research aims to investigate the thermodynamics involved in designing an over-the-suppressor handguard and developing a toolless mounting system. The handguard should have a high thermal conductivity to allow rapid fire while maintaining a surface temperature below discomfort levels. The research should also focus on heat dissipation, insulation, materials, weight, and ergonomics of the handguard. The objective is to develop a handguard that can withstand high temperatures without decomposing or releasing toxic chemicals. Additionally, a toolless mounting system is required for easy removal and maintenance of the piston system. The handguard should remain rigid and return to within ≤ 0.5 milliradians of mounting center when force is applied and removed by the shooter. The proposed handguard should be between 9 and 11 inches in length. The Phase I of the project involves conducting a feasibility study to assess the possibilities that meet the specified requirements. The Phase II focuses on developing, installing, and demonstrating a prototype system. The technology developed through this research can have applications in various military small arms weapons where user interface of a handguard and heat mitigation is a concern. The project has a funding duration until March 31, 2025. For more details and to submit proposals, visit the solicitation agency's website at [solicitation_agency_url].