My personal opinion is that you cannot and should not put lipstick on a pig. I would make sure everything is staked properly and call it a day. If the weapon breaks or your have the chance to sell it then I would get rid of it and get something else.
The problem with upgrading components and or adding items to make the weapon better will not be appreciated by the next buyer as they most likely won't know anything about the purpsose of the upgrades (and most likely doesn't want to pay for them).
C4
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