Sights» as used on the pistol version, are practically identical to those used on my other pistol designs, differing only in lhat the radius at the base is slightly larger. At the risk of being, considered repetitious. I will include directions on how to make such sights here for those who don't have my other hooks.
F.xperience has shown me that elaborate adjustable sights are not necessary on the pistol version of this gun. A simple blade front sight and a fixed, square-notched rear, when aligned and cut to the proper heights, arc completely adequate lor a gun ol this type.
Bases, complete with protective ears, can
Pistol sight blanks shown wifft forrn iiie easily be formed from 16-gauge sheet metal using a vise, form blocks, and a heavy hammer.
I he form block, which can be used to form both front arid rear bases, is made by culling a radius to match the contour of the receiver on the lower side of a steel block. Since the receiver is I 1/2 inches in diameter, the radius cut should match this plus the thickness of the sheet metal used. The block should be .625 inch wide by .750 inch high and at least I inch lung. This will lorm the inside of the sight bases. A short length of 1 1/2-inch-diameter round stock is used to form the convex bottom side, which fits against the receiver. Two I/8-inch diameter holes, .(SJS inch
FORM FROM 1- SHEET METAL BLADES FROM 125"
125" X .750" SLOT
125" X .750" SLOT
PISTOL SIGHTS £
apart, should be drilled on center, completely through the form block. These should continue partway through the lower, round Form block. Locating pins installed in these holes keep the assembly aligned while in use.
Blanks arc cut, as shown in Diagram ^13. with hole«; drilled to match the locating pin holes. The bases will form more easily if left in .1 rectangular shape until formed and the upright ears cut ro shape after forming. With rhe locating pins in place, the blank is positioned between both form blocks and the assembly clamped, with one side down, in the vise. When the vise is tightened, pressure from the vise jaw* will lnrm the radiused bottom portion.
iujjhls mounted in place.
The pari of the blank extending above the form blocks is bent, or folded, flat against the side of the form block using a block and heavy-hammer. At this point the assembly is reversed, or turned over, in the vise and the process repeated. It is helpful to place a spacer, or a scries of blocks (sometimes called "blocking up") between the throat of the vise and the bottom of the part being formed. This will prevent both the work and the form blocks from being driven deeper in the vise when forming.
A slot is cut crosswise in one base to receive the rear sight cross piece and lengthwise down the center of the other for the front sight blade. These can be cut with a 1/8-inch end mill, or, if necessary, with a high-speed hand grinder using a cut-off blade.
I he blades are fluxed and silver-soldered in place in the bases. Both assemblies are then clamped in place on the receiver and silver soldered. Both sights can be kept in alignment during mounting by placing a close-fitting (5/8-
inch-wide) piece of square stock, long enough to reach across both sights, inside both bases and clamping it in place before mounting.
For those who absolutely must have
adjustable sights, the rear sight cross piece can be omitted and the base drilled and tapped lor a Williams "Guide" rear sight, which is adjustable for both windage and elevation. A Marble #20 rear sight, which is almost identical to the aluminum Williams sight except that it is made ol steel, can also be used. Fit her of these will serve the purpose. If you simply must have one that you made youtsell, my book entitled Howe Workshop Weapons for Defense and Resistance: Vol. I. The Submachine Can contains a description of one that is adaptable.
"Hie rifle version requires the combination of a rear sight base and a carrying handle that elevates the rear sight to the same height as Uncommercial gun.
I he base is made by cutting a blank to the shape and dimensions shown in the drawing from
12-gauge sheet metal. Ihc blank is then clamped in the vise against a form block of 5/8-inch-thick steel bar stock, which should be at least 3/4 inch wide and 5 nr more inches long. Here again, tills form block should be supported by blocking it up between the bottom of the block and the throat of the vise When struck with a heavy hammer, work such as this has a tendency to move downward between the vise jaws unless supported
Shaped rear underneath. The portion extending above the fold line is bent flat against the side of the form block using the hammer and a flat piece of bar stock. When formed, the assembly is turned over and the opposite side is formed in the same manner, creating a hollow trough. The sides are then shaped to the profile shown in Diagram A14 or whatever shape appeals to you.
REAR SIGHT/CARRYING HANDLE RIFLE VERSION
Pmfttaf rear'sight mounted in ptace.
Pmfttaf rear'sight mounted in ptace.
lhe legs arc formed by bending the narrow llfiL portion extending from the ends of the trough downward apprOAimately 150 degrees, or 30 degrees from the vertical A line parallel to the bottom of the trough portion is marked 1.400 I nr. he* k below the trough. The mounting tabs are bent to a point where they match a Hat surface. These should he sharp bends formed by a block and hammer. The resulting tabs should be cut to matc h the radius ill Lhe receiver. This can be done in the milling machinc using a large ball cutter, or ic can be ground and filed to fit.
A simple, lixed rear sight ran he: made from a strip of 14-gauge ^hect metal with a leg bent upward at 90 degrees and drilled for a peep sight hole, lhe horizontal portion, together with the base, is drilled and tapped lur at least one mounting screw. Since this version can be better
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