Basically it's the Longshot barrel extension (I did the frontgun integration, and therefore didn't have any use for the extra barrel) put in the Recon's extension shell. As I said it does nothing for efficiency, it actually makes the gun fire shorter than it usually does. But the close-in fighting my friends and I do makes range unecessary. And it sorta looks like an M4; at least I think so. I have made a shorter extension since I took these pictures so I'll be posting more pictures shortly.
Oh , the fore grip is a longshot scope's rail attachment, with a peice of 3/4" PVC pipe epoxied to it.
EDIT: More pictures. The short one is the "commando" variant. Basically just a cut down version.
And the insides (of the smaller one, one of the screws is damaged on the bigger one, so I couldn't get it open).
It seems pretty self-explanatory. I would do a complete write-up, but I don't have anymore extensions.
Edited by goongala, 08 March 2009 - 06:27 PM.