[ox71]

Hi all, I'm thinking about adding 4" to my aeg to make it carbine length, currently I have a king arms m4 with a 10 inch barrel, the cylinder has holes on each side.

I was told I can't use a longer barrel set up on the aeg because of the function of these holes.

Can someone tell me what parts to change to achieve a 14" barrel length.

thank you.