Originally Posted by yuhaoyang
remove the flash-hider to reveal the 14mm (neg?) thread. Although if your getting a MP5A something, then it's completely up to you whether you get a silencer AND a longer inner barrel, personally I would leave it as it is. The reason I had said you should get one for the SD is because the silencer and the extra space is already there.
oh ok dident think of that. only reason i dont like sd version is that round foregrip looks like a dubble silancer. can u change the foregrip on the sd? i see what u mean tho would make more sense to get the sd if i wanted a silancer and longer barrel