I somewhere found a set of flaming mantis blades. But it seems I can't replace mine. The blades themself are a mod on the whole 'mantis blade system', and removing already installed mods isn't allowed.
Probably I need to find 'mantis blades' without blades to mount them?
Shame in Shadowrun Hong Kong you can install Razor Hand and their version of Mantis Blades from the start, and later upgred to better model, here look like there is only one type of mantis blades that are lock behind street cred 20, and you just switch blades later real shame.