Granted Patent B2

US 8,336,243 · App. 12/100,268 · Granted Dec 25, 2012

Abstract

Claims (38)

1. A semi-automatic or automatic rifle comprising: a receiver having a receiver frame;

a barrel removably connected to the receiver frame;

a removable hand guard section extending over and generally surrounding a portion of the barrel, the removable hand guard section removably connected to the receiver;

a hand guard capture coupled to the barrel;

the removable hand guard section having a locating feature adapted to engage the capture and locate the hand guard relative to the capture;

the removable hand guard section having a mounting rail portion comprising a first non-polymeric material that has portions embedded into a polymer used to mold a body portion of the removable hand guard section, wherein other portions are not embedded into the polymer, the portions of the first non-polymeric material being embedded into the polymer during a molding process of the body portion;

the barrel having a locking collar adapted to removably position and lock the removable hand guard section relative to the receiver frame and the barrel;

wherein the removable hand guard floats in position relative to the barrel; and

wherein the first non-polymeric material is configured to define a rail and the portions are flanges that extend along opposites sides of the rail.

2. The semi-automatic or automatic rifle of claim 1 , wherein the first non-polymeric material is aluminum, and wherein the polymer is a peek polymer.

3. The semi-automatic or automatic rifle of claim 2 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section.

4. The semi-automatic or automatic rifle of claim 1 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section, and wherein the lower hand guard section comprises an integrally molded pistol grip.

5. The semi-automatic or automatic rifle of claim 1 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section, and wherein the mounting rail portion of the upper hand guard section is molded between a pair of sections of the upper hand guard section and the mounting rail portion extends from one end of the upper hand guard section to an opposite end of the upper hand guard section.

6. The semi-automatic or automatic rifle of claim 1 , wherein the removable hand guard section further comprises an upper hand guard section and a lower hand guard section and wherein the upper hand guard section has a cutout configured to receive a protrusion of a removable heat shield, wherein the protrusion and the cutout are configured to allow a rod of a piston operating system to be received therein.

7. A semi-automatic or automatic rifle, comprising:

a receiver having a receiver frame;

a barrel removably connected to the receiver frame;

the receiver extending over and generally surrounding a portion of the barrel, the receiver having a removable hand guard section removably connected to the receiver;

the removable hand guard section comprising a molded composite structure having a non-polymeric mounting rail portion with portions thereof embedded into a non-metallic body portion during a molding process of the removable hand guard section, wherein other portions of the non-polymeric mounting rail portion are not embedded into the non-metallic body portion;

wherein the removable hand guard section is modular and interchangeable with other different hand guards or rails; and

wherein the portions of the non-polymeric mounting rail portion are flanges that extend along opposite sides of the mounting rail portion.

8. The rifle of claim 7 , wherein the non-polymeric mounting rail portion is aluminum, and the non-metallic body portion is formed from a peek polymer and the flanged include slots configured for receipt of the polymer therein.

9. The rifle of claim 7 , wherein the removable hand guard section further comprises an upper hand guard section and a lower hand guard section.

10. The rifle of claim 9 , wherein the lower hand guard section further comprises an integrally molded pistol grip.

11. The rifle of claim 7 , wherein the removable hand guard section further comprises an upper hand guard section and a lower hand guard section, and wherein the mounting rail portion of at least one of the upper hand guard section and the lower hand guard section is a picatinny rail.

12. The rifle of claim 7 , wherein the removable hand guard section further comprises an upper hand guard section and a lower hand guard section, and wherein the mounting rail portion of the lower hand guard section comprises a T-track rail capable of having another accessory rail slidably mounted therein.

13. The rifle of claim 7 , wherein the removable hand guard section further comprises a removable heat shield and an upper hand guard section and a lower hand guard section and wherein the upper hand guard section has a cutout configured to receive a protrusion of the removable heat shield, wherein the protrusion and the cutout are configured to allow a rod of a piston operating system to be received therein.

14. A rifle hand guard kit for a rifle, the kit comprising:

a removable hand guard section adapted to extend over and generally surround a portion of a barrel of the rifle, the removable hand guard section removably connectable to a receiver of the rifle;

the removable hand guard section having a locating feature adapted to engage a hand guard capture of the rifle and locate the hand guard relative to the capture;

the removable hand guard section having a molded composite structure having a non-polymeric mounting rail portion with portions thereof integrally molded into a non-metallic body portion during a molding process of the non-metallic body portion and wherein other portions of the non-polymeric mounting rail portion are not integrally molded with the non-metallic body portion;

wherein the removable hand guard section is modular and arranged so that the hand guard section is freely interchangeable, at least in part, with other rifle hand guards that are different from the removable hand guard section and have different predetermined characteristics; and

wherein the portions of the mounting rail portion are flanges that extend along opposite sides of the mounting rail portion.

15. The rifle hand guard kit of claim 14 , wherein the non-polymeric mounting rail portion is aluminum, and wherein the non-metallic body portion is a peek polymer.

16. The rifle hand guard kit of claim 14 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section, and wherein the lower hand guard section comprises an integrally molded pistol grip.

17. The rifle hand guard kit of claim 14 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section, and wherein the mounting rail portion of the upper hand guard section comprises a picatinny rail, and wherein the mounting rail portion of the lower hand guard section comprises a T-track rail.

18. The-rifle hand guard kit of claim 14 , wherein the removable hand guard section comprises an upper hand guard section and a lower hand guard section, and wherein the mounting rail portion of the upper hand guard section comprises a picatinny rail, and wherein the mounting rail portion of the lower hand guard section comprises a T-track rail capable of having another accessory rail slidably mounted therein.

19. The rifle hand guard retrofit kit of claim 14 , wherein the removable hand guard section further comprises a removable heat shield and wherein the flanges further comprise openings configured for receipt of the non-metallic body portion therein.

Assignments (22)