Hello!
Have you read the
FAQ?
It's really helpful and quite thorough, you might want to consider reading it now
Most hilts work fine with the spear extension (except for curved hilts such as the Bane).
What do you mean by a Viper blade? Do you mean the claws at the end of the hilt near the emitter? If so, send an email at
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, you'll have a gentleman by the name of Justin on the other end, and he's your customisation guru for your hilts!