Mack W. Gwinn Jr.

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Levant, ME, US

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Patents Grantslast 30 patents

Information Patent Grant
Firearm buffer system
- Patent number 6,829,974
- Issue date Dec 14, 2004
- Mack W. Gwinn
- F41 - WEAPONS
Information Patent Grant
Firearm barrel change apparatus
- Patent number 6,606,812
- Issue date Aug 19, 2003
- Mack W. Gwinn
- F41 - WEAPONS
Information Patent Grant
Small arm magazine
- Patent number 4,689,907
- Issue date Sep 1, 1987
- Mack W. Gwinn
- F41 - WEAPONS
Information Patent Grant
Muzzle attachment for a firearm barrel
- Patent number 4,392,413
- Issue date Jul 12, 1983
- Firepower, Inc.
- Mack W. Gwinn
- F41 - WEAPONS