I just took these this morning.

My retro builds (except for the M16Training Rifle on the left)


M16 Training Rifle, 602, 603/XM16E1, 603/M16A1 (early 70s), 603/M16A1 (mid 70s), 605, XM607, XM177E2, 653, 723 (early), 723 (late), and 727

The whole Retro Family


M16 Training Rifle, 602, 603/XM16E1, 603/M16A1 (early 70s), 603/M16A1 (mid 70s), 605, XM607, XM177E2, 653, 723 (early), 723 (late), 727, Colt SP1 Carbine (1981), Colt SP1 Sporter (1977), and Colt AR-15 A2 (1986)