you get 4000 dollars for the first one after picking up the gun that looks like a browning from ww2 and buy it or buy the 10000 dollar one they come in one package adws is the second one(10000 dollars) and better it is a 50 cal. a.a. gun or anti air craft gun and you can reload it for free any amount of times you want giving it 1000 rounds unless you have sentry gun engineer like me than it is a quicker reload time for it and it gets 2000 bullets.
Once you become a Colonel you unlock the sentry gun engineer perk. It allows you to reload sentry guns faster and they start off with more ammo.
yes, you can have as many as you can afford.
yes to my own question just figured it out might be a limit though...
When th ammo in the sentry gun reaches 0, then you can reload it. To reload, walk on top of the sentry gun and press the F key. I'm not sure if you can reload it when there is still ammo in it though, but you can try. When you reach the rank Colonel, once you set up a sentry gun, you will have double ammo for the sentry gun, and you can reload it faster.
It grants you double ammo on your turrets and reduces the reload time.
the flamethrower or aa12 k costs 2400 coins and are u sure it does
Press the g key and it will throw a grenade where the cross-hairs of your gun are
double ammo and reload faster good luck all
fff
no
in call of duty modern warfare 2 a sentry gun requires 5 kills or if the perk hardline is applyed 4
It makes you an awsome zombie killer, but nothing more.