Gun device allowing replacement of barrels with different sizes

Abstract

A gun device allowing replacement of barrels with different sizes, having a gun body, one end of the gun body has an opening. The opening outer edge has a threading and a positioning slot. The gun body connects with a first size barrel by connecting the threading with a lock. The gun device further comprising: a guide adapter, a second size barrel and a barrel key. The guide adapter has a positioning body, a projecting part, and a first groove, the projecting part alignment connects with the positioning slot. The second size barrel has a second groove, the first groove corresponding with the second groove.

Claims

1. A gun allowing replacement of barrels with different caliber sizes, having a gun body, one end of the gun body having an opening, an outer edge of the opening having a threading and a positioning slot, the gun body assembled to a first barrel having a first caliber via connecting the threading with a lock, said gun further comprising: a guide adapter having a positioning body, a projecting part, and a first groove, the projecting part being aligned to and connected with the positioning slot when the guide adapter is disposed in the opening; a second barrel having a second caliber and a second groove, the first groove corresponding with the second groove when one end of the second barrel is disposed in the guide adapter; and a barrel key having two sides and being disposed between the first groove and the second groove, the first groove having two sides, the two sides of the barrel key being fixed with the two sides of the first groove, wherein the barrel key comprises a first flat portion and a second flat portion folded from the first flat portion such that the first flat portion and the second flat portion form an obtuse angle; wherein the gun body is assembled to the second barrel by separating the first barrel from the gun body, disposing the guide adapter, the second barrel and the barrel key in the opening, and connecting the lock to the threading.

2. The gun allowing replacement of barrels with different caliber sizes of claim 1, wherein the guide adapter comprises a through-hole for fixing the guide adapter and the second barrel to one another via disposing a set screw in the through-hole.

3. The gun allowing replacement of barrels with different caliber sizes of claim 1, wherein the gun body is an AR-15 type automatic rifle gun body.

4. The gun allowing replacement of barrels with different caliber sizes of claim 1, wherein the first barrel is an AR-15 type automatic rifle barrel with an inner diameter of substantially 5.56 mm.

5. The gun allowing replacement of barrels with different caliber sizes of claim 1, wherein the second barrel has an inner diameter of substantially 0.22 inches.

6. The gun allowing replacement of barrels with different caliber sizes of claim 1, wherein the positioning body is annular and formed on an outer edge of the guide adapter and contacting the lock.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Objectives, features, and advantages of the present invention are illustrated with specific embodiments in conjunction with the accompanying drawings, in which:

(2) FIG. 1 is an exploded view of a gun device allowing replacement of barrels with different sizes according to a preferred embodiment of the present invention;

(3) FIG. 2 is a cross-sectional view of a gun device allowing replacement of barrels with different sizes according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(4) Referring to FIG. 1 and FIG. 2, there are shown an exploded view and a cross-sectional view of a gun device allowing replacement of barrels with different sizes according to a preferred embodiment of the present invention. The gun device 1 has a gun body 10. The gun body 10 is adapted for use with an AR-15 (Armalite Rifle-15, AR15) automatic rifle. One end of the gun body 10 has an opening 11. The opening 11 outer edge has a threading 12 and a positioning slot 13. The threading 12 is used for connecting with a first size barrel 15. The gun body 10 composes the first size barrel 15 via connecting the threading 12 with a lock 14. The first size barrel 15 is an AR15 automatic rifle's barrel. The inner diameter of the first size barrel 15 is 5.56 mm caliber.

(5) The gun device 1 allowing replacement of barrels with different sizes further comprises: a guide adapter 2, a second size barrel 3 and a barrel key 4.

(6) The guide adapter 2 is a hollow cylindrical structure. An outer diameter of one end of the guide adapter 2 is smaller than an inner diameter of the opening 11 such that the one end of the guide adapter 2 can be partially disposed in the opening 11. The guide adapter 2 has a positioning body 21, a projecting part 211, and a first groove 22. The positioning body 21 is an annular structure formed on the guide adapter 2 outer edge and contacting the lock 14. The projecting part 211 extends from the positioning body 21 and the first groove 22 is formed on the positioning body 21. The projecting part 211 alignment connects with the positioning slot 13 when the guide adapter 2 is disposed in the opening 11. In the preferred embodiment of the present invention, the first groove 22 is formed at the other side of the projecting part 211.

(7) The second size barrel 3 is a Ruger 10/22 automatic rifle's barrel. An inner diameter of the second size barrel 3 is 0.22 inch caliber that can use 0.22 inch caliber bullets. An outer diameter of one end 32 of the second size barrel 3 is smaller than the inner diameter of the other end of the guide adapter 2 such that the one end 32 of the second size barrel 3 can be partially disposed in the other end of the guide adapter 2. The second size barrel 3 has a second groove 31. The first groove 22 corresponding with the second groove 31 when the one end 32 of the second size barrel 3 is disposed in the guide adapter 2. Preferably, the guide adapter 2 has at least one through-hole 24 for fixing the guide adapter 2 and the second size barrel 3 via disposing a set screw 23 in the through-hole 24.

(8) The barrel key 4 is disposed between the first groove 22 and the second groove 31. Both sides of the barrel key 4 are nestled and fixed with both sides of the first groove 22.

(9) To replace the first size barrel 15, the first size barrel 15 is separated from the gun body 10. The guide adapter 2, the second size barrel 3 and the barrel key 4 are disposed in the opening 11. The barrel key 4 is nestled and fixed the first groove 22 to fix the guide adapter 2, the second size barrel 3 and the gun body 10, and the lock 14 is connected to the threading 12 to form the gun body 10 connected with the second size barrel 3.

(10) Referring to all the above diagrams, the present invention discloses a gun device 1 allowing replacement of barrels with different sizes. The gun device 1 allowing replacement of barrels with different sizes is applicable to the gun body 10 of AR-15 automatic rifles such that the AR-15 automatic rifles can use 0.22 inch caliber bullets after replacing the first size barrel 15 with the second size barrel 3 on the gun body 10.

(11) The above description shows sufficiently that the present invention is novel, involves inventive steps, and has high industrial applicability in terms of its objectives and advantages, thereby meeting the requirements of patentability. However, the above description is focused on a preferred embodiment of the present invention only and therefore is not restrictive of the present invention. All equivalent changes and modifications made to the preferred embodiment of the present invention according to the claims of the present invention should fall within the claims of the present invention.