Adjustable front focus sight for a handgun
A rotatable, adjustable circular focus sight is installed in a front sight of a handgun. The focus sight has a circular opening that may be rotated to different positions in the front sight to sharpen aiming of the handgun in order to accommodate varying environmental conditions and different types of ammunition. Alternative embodiments of the focus sight incorporate various cross-hair patterns and a pinhole.
1. A front sight for a handgun comprising:
(a) a tube mounted to a front of a barrel of the handgun, the tube having a square cross-section along a longitudinal axis of the tube;
(b) the tube forms a central threaded hole;
(c) an insert threadably received in the central threaded hole of the tube, the insert forming an off-center focus sight opening therethrough; and
(d) the insert is rotated to adjust the location of the focus sight opening to a plurality of positions within the central threaded hole in the tube.
2. The front sight of claim 1 wherein the insert is a bolt with a hole therethrough.
3. The front sight of claim 1 wherein the front sight fills a slot in a rear sight of the handgun when viewed from behind the rear sight.
4. The front sight of claim 1 wherein the focus site is a pinhole in a center of the insert.
5. The front sight of claim 1 wherein the tube is rectangular.
6. The front sight of claim 1 made of metal.
7. The front sight of claim 1 made of plastic.
8. The front sight of claim 1 wherein the insert has one or more cross-hairs installed therein.
9. The front sight of claim 8 wherein the insert has angled cross-hairs.
10. The front sight of claim 8 wherein the insert has cross-hairs in an angled pattern.
11. The front sight of claim 8 wherein the insert has cross-hairs in a T-shaped pattern.
12. The front sight of claim 8 wherein the insert has cross-hairs in a pattern of intersecting lines across the entire opening of the insert.