After slowly gathering parts for more than a year, I've finally finished all four rifles.
All three AR-15s have PSA uppers and lowers.
The M4 has a complete PSA Premium upper with FN CHF barrel.
The middle one is carbine length with a BTE adjustable gas block, and Magpul MOE stock and grip.
The bottom one has stock, barrel, handguards from Windham.
Two have CMMG LPKs installed, the A2 style has a PSA LPK installed. One of the CMMG triggers never could be improved much, almost like the cuts were out of spec. The hammer would hit the disconnector when cocking it even when the trigger had no tension on it. I ended up getting one of the QMS triggers instead. The other two CMMG triggers worked fantastic after some minor buffing of the mating surfaces.
http://i224.photobucket.com/albums/dd244/KorbenD/f77694cccc1b517b.jpg
The AR-10 (LR-308) has parts from all over the place.
Buffer, spring, tube, upper receiver - DPMS
Most of the LPK and the BCG - CMMG
Grip - Ergo
Stock - Magpul
Safety - PSA
Trigger - Hiperfire
Free float rail - GRG
Gas block - BTE
Magazine release - Armalite
Barrel - Black Hole
Tactical Machining - Lower receiver
Brake - Precision
Scope - Bushnell laser rangefinding
http://i224.photobucket.com/albums/dd244/KorbenD/05a51ba2d330eb1a.jpg