The DAM looks a bit like a slim Beretta ARX-160.
The Hammer -7 looks vaguely like a Valtro PM-5.
RAP-4 has made a version of their T68 that looks a lot like an AKMS.
The upcoming Tippmann TCR looks like a Glock with a Roni carbine kit.
With the BT springfeed kit, a BT TM-7 resembles an MP-7.
Same goes for BT's "G36" version of the BT-4.
The various ATS and TS-1 guns look like the HK-51.