What launcher would work on my CA M15a4?(full stock)
 

Just wondering about what grenade launcher I should get for my Classic Army M15a4 rifle (fullstock). I want one with a heatshield though but i can only find the classic army launchers that work without modification. I dont care what i need to buy to get it fit (like adaptors) but i don't want to have to do any custom work to my barell