Originally Posted by j lynno
okay so whatcha saying is i could make a spyder pump and would most likely preform as good as a high end sniper depending on what bolt pump handle barrel etc i put on it?
And valve work, hammer crafting (very non-trivial modifications must be done if doing a 'proper' conversion), re-springing, valve chamber size alteration, regulation, and on and on.
You are, for all intents and purposes, building a gun. You're just using a block of metal that already has a few convenient holes drilled and tapped (barrel threads, feedneck, etc) so it saves you a lot of extra work.
So the performance potential is directly proportional to your own modification skills.