TYR 1 Outfitters has released the TYR11 silencer, designed for Mk11 spec rifle parts and specifically matched to mk13 barrels. Some installations may require minor gunsmithing based on individual barrel profiling and cutting. Further details can be found on their website.
TYR 1 Outfitters state “These will work on Mk11 spec rifle parts and are meant to be matched to mk13 barrels. Some may require minor gunsmithing depending on who profiled and cut your mk13 barrel.”
SOURCE:https://tyr1outfitters.net/