I just wanted to point out that its easier to start by trying to Alter a 22 cal Mag first. At the price they are $US12-14, I would have to build a complete one in about 30 minutes to even come near a plastic Crosman Mag, and thats with NO Profit to Me. Its just not worth the Effort, especially for a One Off. Its nice to get the Compliments for the Handmade Part, but Its money I need to pay the Bills, Lol. When im competing with a Mindless CNC its bad enough trying to make anything out of a Custom job even with a few Jigs and Fixtures to Help.I appreciate that people would pay a bit more for a One off part, but how much before it becomes rediculous? I see people complain about a $80 Metal Rapid Mag, so why would they be happy with one I made by Hand at even $80? if you see my point. Modding a Plastic Marauder Mag is my 1st Option in the meantime and if that cant be done, then I can then look at alternative ways.