It's original and fits the Soldier's patriot spirit, i would tweak the model just a bit so it looks more cartoonish, but it's an amazing idea and would make the second handgun for the Soldier, i thought this could be the stat info:

Base damage: 35-50 per shot (When enemy is closer, 50 damage.)
Attack Interval/Speed: 0.8 sec
Fast deploy and holster
Reload: 1.45 sec
8 bullet clip size
+25% jump height
Hitscan weapon with minimum spread.

What do you think? Didn't wanna add Headshot crits because you would need damage penalty to balance that and the whole idea of a Deagle is to deal High damage even on body shots or be a poor man's sniper.