The FA68K sound suppressor, an end-mount design that does not overlap the firearm barrel, adds just 4 inches to the original length of your M468, REC7, or other 6.8 mm SPC / .277 caliber rifle, yet it provides superior sound suppression,they protect shooter and team members against both permanent and temporary hearing loss, enhancing situational awareness and communication; reduce sound signature, concealing shooter's position; reduce or virtually eliminate muzzle flash and dust signatures, concealing shooter's position, preserving night vision and unobstructed view; reduce recoil, improving bullet impact observation and allowing faster follow-up shots. Features · High-performance sound attenuation · Rock-solid attachment in seconds without tools · Minimal and consistent zero shift regardless of number of attach/detach cycles · Redundant-welded subcomponents eliminate parts loosening · Compact size and light weight, allowing full-time use · End-mount design does not overlap firearm barrel · Machined from heat-treated stainless steel, finished in a tough, corrosion-resistant coating · Extreme resistance to heat and gas/particle erosion due to special alloy construction · No permanent modifications required for attachment to most weapons