Well, you didn't mention which model you want it compared to, so I'll compare it to the closest (looking) model, the Classic 16.
Sights: Classic 16, A2 front, rear. Lite 16, A1 front, A1 rear.
Stock: Classic 16, A2 stock. Lite 16, pinned Fiberite CAR stock.
Lower: Classic 16, forged. Lite 16, investment cast.
Barrel: Classic 16, HBAR (heavy under handguards, .750 in front). Lite 16, Lightweight (contoured under handguards, contoured in front of handguards).
Everything else is basically the same.