Weapon conversion kit

1. A conversion kit for converting an AR-15 rifle to shoot 9 mm rounds, the kit comprising:

a weighted bolt carrier;

a bolt coupled in a fixed position within the bolt carrier by use of a bolt key, wherein the bolt key and the weighted bolt carrier convert the rifle to a blowback system; and

a spring biased firing pin, operatively coupled within the bolt.

2. The kit of claim 1 , wherein the weighted bolt carrier is weighted at a rear end of the bolt carrier.

3. The kit of claim 1 , further comprising a magazine, wherein the magazine comprises and outer case, an insert, a follower and a spring.

4. The kit of claim 3 , wherein the outer case of the magazine is a .223 in. outer case.

5. The kit of claim 3 , wherein the follower slides within a compartment defined on three sides by the outer case and the insert on the forth side.

6. The kit of claim 5 , wherein follower allows for a plurality of 9 mm rounds to be loaded within the magazine.

7. The kit of claim 6 , wherein the insert comprises a top surface having an incline.

8. The kit of claim 7 , wherein the inclined top surface of the insert assist in the feeding of the round into the chamber.

9. The kit of claim 1 , further comprising a side charging handle.

10. The kit of claim 1 , further comprising a conventional lower receiver.

11. The kit of claim 10 , wherein the conversion kit is coupled to a barrel and hand guard to form an upper receiver.

12. The kit of claim 11 , wherein the upper receiver with the conversion kit is coupled to the conventional lower by use of a front pin and a rear pin.

13. A conversion kit for converting an AR-15 rifle to shoot 9 mm rounds, the kit comprising:

a weighted bolt carrier operatively coupled within an upper receiver;

a bolt coupled in a fixed position within the bolt carrier, the bolt comprising lugs, wherein the lugs mesh with corresponding lugs of a barrel of the AR-15; and

a spring biased firing pin, operatively coupled within the bolt, wherein during operation, the lugs of the bolt do not rotate and lock behind the lugs of the barrel as the lugs do with a gas operated AR-15.

14. The kit of claim 1 , wherein the weighted bolt carrier is weighted at a rear end of the bolt carrier.

15. The kit of claim 1 , further comprising a magazine, wherein the magazine comprises and outer case, an insert, a follower and a spring.

16. The kit of claim 4 , wherein the outer case of the magazine is a .223 in. outer case.

17. The kit of claim 11 , wherein the conversion kit is coupled to a barrel and hand guard to form an upper receiver.

18. The kit of claim 12 , wherein the upper receiver with the conversion kit is coupled to a conventional lower receiver by use of a front pin and a rear pin.

19. An AR-15 weapon with a conversion kit for converting the AR-15 rifle to shoot 9 mm rounds, the weapon comprising:

a lower receiver;

an upper receiver comprising a barrel and hand guard;

a weighted bolt carrier operatively coupled within the upper receiver, wherein the weighted bolt carrier is weighted at a rear end of the bolt carrier;

a bolt coupled in a fixed position within the bolt carrier, the bolt comprising lugs, wherein the lugs mesh with corresponding lugs of a barrel of the AR-15, wherein during operation, the lugs of the bolt do not rotate and lock behind the lugs of the barrel as the lugs do with a gas operated AR-15;

a spring biased firing pin, operatively coupled within the bolt; and

a magazine comprising an outer case, an insert, a follower and a spring, wherein the outer case is a .223 in. outer case.

20. The weapon of claim 19 , wherein the upper receiver with the conversion kit is coupled to the lower receiver by use of a front pin and a rear pin.