airsoft toy m4 upper receiver blank

Should bolt onto any TM based m4 aeg. barrel should slide right in if you know what i mean. Add whatever features or look your going for.

..or you can print as is for the lightest AEG upper EVER!

lets see what you got!

*PS: i included 2 pictures of the potential of this blank receiver. basically a replica of the krytac LMG-e upper..

If you like what i created and want a copy to print for your m4, please email me @ alexdeguz at hotmail dot com... i will literally ask for only 40 quart