Laser Grips

Extra Magazine or Laser Grip?

I’m getting this pistol http://shop.ehobbyasia.com/pistols-gbb-smgs/tokyo-marui/gas-pistol/tokyo-marui-glock-18c-gbb-pistol-black.html and I am not sure whether to buy 2 extra mags or a laser grip and one extra mag? Here is the laser grip http://shop.ehobbyasia.com/catalog/product/view/id/9822/s/silverback-laser-grip-for-g17-pistol/category/47/ Just an extra thing the pistol is fully automatic so I would use a lot of ammo. I do have a speed loader but I’m not sure if the mags hold enough gas in one fill for 50 bbs

Nice. I would get the magazine. How is the TM rated at 300 fps? The limit is 280 fps or something in Japan. Does ehobby ship to USA?

2010 SHOT Show: Crimson Trace Laser Grips