Supporters TPI Posted February 4, 2012 Supporters Posted February 4, 2012 Ok So i happened across a Tanio-Koba M4 inner rifled barrel so i bought it but i`m struggling to find an Outer Barrel that will cover it (300MM if you Fancy a look for an M4 barrel for me) so could i cut the Inner barrel down a bit? without making it useless of course. and will i need to change my Piston I think it`s called as it`s an M4A1 stock Spec`s?
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