M416: $20000
Dual: No
Damage: 6
Spread: 0.05
Freeze: 0.20
Fire Rate: 0.26
Reload Freeze: 0.25-0.4
Auto: Yes
Clip: 18

M16: $15000
Dual: No
Damage: 7
Spread: 0.1
Freeze: 0.2
Fire Rate: 0.25
Reload Freeze: 0.3-0.38
Auto: Yes
Clip: 16

M16 is probably a more powerful weapon than m416. While m16 is more expensive to upgrade, $300 when in good shape, the m416 is much cheaper to upgrade $100 when in good shape. M416 is an uncommon gun, due to it's slight initial overprice. In the long run, m416 would drain less of your money over the repairing. M16 itself is a very useful gun for it's price with the drawback of a pricey upgrade price. M416 wouldn't be a good choice if you are getting a new weapon shortly. While m16 would be the opposite.