mag compatability in ICS L86 & barrel length

[bob86]

thinking about getting an l86, and i remember that my socom gear lancer mids would not fit in the magwell. so i know some mags do not fit in them (i'm assuming the 85 and 86 magwells are the same size)

the mags im thinking about using would be either APS U-Mag high caps for ASR / UAR's or VN style hicaps. or possibly magpul p mag style vn mid caps

maybe these?
http://www.zerooneairsoft.com/produc...oducts_id=2223
http://www.zerooneairsoft.com/produc...oducts_id=2229
http://www.zerooneairsoft.com/produc...oducts_id=6230

can anyone tell me if these will fit??


also has anyone swapped out the barrels in these, if so, what did you use and what were the results? is it needed?