Here's my two recent projects, now that I'm close to done with my Canadian C7/C8 projects...enjoy!
First is a 723 build, all Colt, including an LE trade AR15A2 lower, Colt CH forge C7-type (A2 upper with field sights) upper, and a '96-dated Colt 14.5 C MP barrel assembly. The sear block is cut down, so running a Colt FA BCG (C-stamped, MPC), Colt grey charging handle, Colt grey Delta ring, Colt large "D" forward assist, Colt A2 FH (pinned with a spacer to 16+"), and full Diemaco original C8 furniture set I purchased from a Canadian dealer (Colt vinyl acetate stock, Colt 2-position RE, lock ring, Devtek "D" marked A2 grip, and shiny 6-hole Colt carbine handguards.) It's basically a first gen Diemaco C8 carbine, but I think the barrel profile is a bit off from what they used.
Next is a 727 build, all Colt, built on an LE trade LE 6520 carbine that I swapped parts out on. Includes a C MP marked 14.5 M4 barrel assembly, Colt FA C-stamped BCG, Colt charging handle, 4-position Colt RE, Colt Fiberlite N1 stock, Colt grip, old Colt double heat shield M4 handguards, Colt A1/A2 side sling mount, and Colt A2 FH (pinned with a spacer to 16+"). More or less an XM-4/early M4 build.