Engineered for hard-use 5.56 operations and sustained firing schedules. Compact footprint and quick-detach KeyMo mounting make this a purpose-built tool for rapid deployment and modular configuration. Ruggedized construction emphasizes durability and consistent performance under duress.

Key Specifications

• Caliber rating: 5.56 NATO / .223 Rem
• Mount: KeyMo quick-detach (includes 1/2-28 KeyMo flash hider & adapter)
• Full-auto rating: Yes
• Baffle construction: welded Stellite baffles
• Tube material: 17-4 PH stainless steel outer tube
• Length (no adapter): 4.87 in
• Length (with KeyMo adapter): 6.27 in
• Energy rating: 2200+ ft·lb
• Includes: KeyMo adapter, 1/2-28 KeyMo flash hider, TL tool pack

Mission Brief: The Sierra 5 KeyMo is a rugged, modular suppressor option for 5.56 platforms—designed to integrate quickly via KeyMo while preserving durability in heavy-use roles. It limits overall footprint while providing proven Stellite baffle durability, making it a dependable choice for operators prioritizing reliability and rapid reconfiguration.