Built using advanced 3D printed construction from 17-4 stainless steel & Haynes 282 this 5.56mm suppressor is designed for shooters who run their gear hard. The optimized internal geometry delivers efficient gas flow low flash signature and reduced back pressure while maintaining superior sound performance. HUB 1.375 24 compatibility a user-serviceable end cap and the included War Eagle muzzle device make the PRO-KOR 556K adaptable durable and ready for sustained hard use on SBRs and full-length carbines alike.