GM or in general visor fans now have news to cheer about with Bandai announcement of its Premium-Bandai released of Master Grade MG 1/100 scale GM Cannon. As for me, the news would seems too later as I had already built my own 1/100 scale GM Cannon from conversion kit on mainly MG RX-78-2 Gundam Ver. O.Y.W and as for the shoulder, I had replaced it with GM Sniper Ground Type. The conversion kit was a recast of B-Club resin and presumably more inferior. Good to do some filing or soaked the resin in hot water with detergent, gently rubbed off those greasy surface.
The assembly was rather straight forward with main replacement parts like the lower portions of legs and torso been super-glued together. Gotten factor in the additional cost of paint, more time and effort on this GM assignment. Good thing the basic colours for this Mobile Suit Variant was not difficult to find from standard epoxy spray can. Upon completion, it gave me much satisfactions to think that it was fully painted and unique to me. For that, I will give the P-Bandai GM Cannon a miss. RGC-80 GM Cannon really looks cool with those enlarged calves and the overall armour more beefed up.