Will an M16/M4 magazine fit a 6.88mm M5L?

[Schugg]

i know that you cant put the 6.88mm rounds in the m16 mag without them causing it to swell and cause issues, but just for the purpose of an empty m16 magazine going in to a stag arms M5 will it fit? hard to find info on this online....im trying to find a display stand and can only find this m16/m4 stand. but being im not sure of the mag differences i dont know if it will be fine for display purposes.

m16/m4 display stand
http://www.kingarms.com/productpage.asp?prodid=1415


stag arms 6.88mm M5L rifle
http://renegadearmament.com/index.php?main_page=product_info&products_id=9526