What kind (brand) of MP5 do you have? Is it an AEG or springer? Can you remove the foregrip?
Does it matter whether it is from a seller in the States or overseas?
One place to start (just to give you an idea) is Airsoft Atlanta:
www.airsoftatlanta.com/new.htmScroll down to "Guarder Tactical Grip". A little below it is "G&P Front Handguard w/Flashlight system".
I also know Tokyo Marui makes the tactical flashlight grip (minus the flashlight) specifically for their line of MP5s. Any major airsoft dealer should have them: Den Trinity, Wargammers, etc.
Hope this helps.
Kevin
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Marines I see as two breeds, Rottweilers or Dobermans, because Marines come in two varieties, big and mean, or skinny and mean. They've got really short hair and they always go for the throat."