Spring gun for underwater hunting. Self-propelled underwater gun

In winter, there is enough free time, which can be spent with profit. For example, to make a gun for underwater hunting in a home workshop. There are a wide range of modifications that can be made independently. The article will describe how to make a spring gun with your own hands.

Design of spring underwater guns

The device ejects the harpoon due to the energy of the spring or springs, which are in a compressed or stretched state.

In the design, the handle is located approximately in the middle of the weapon, which makes it more manoeuvrable and provides optimal balancing.

Simplicity of modification provides a high degree of reliability. Spring guns for spearfishing are compact. In particular, this applies to models in which the spring is stretched, and the harpoon is placed inside it when charging. The handle is close to the trunk. These indicators help improve accuracy.

Benefits

The advantages of such a weapon include low weight and accuracy, which contributes to catching the brisket of a predatory fish.

If we compare a spring gun, the basis of which is compression, with a gun with rubber bands, the result of such a comparison will clearly not be in favor of the latter.

The gun with rubber parts is twice as large as that of a spring. Soft gum quickly deteriorate. Rapidly moving parts (strands and harpoon of rubber) are also ineffective. By the accuracy of the battle it can not be compared with a spring weapon, since in the last article the harpoon is in a long trunk serving as an accurate guide.

Negative sides of the product

The spring gun has a high noise level when the shot is fired. During the charging process, the spring emits a creak. In order to reduce unwanted sounds, it is recommended to wipe the handle with a cloth moistened with glycerin.

The self-propelled underwater gun is difficult to make by oneself. This is due to the fact that it is difficult to get a stainless steel for making a spring. Also, the process of heat treatment of this part is laborious.

What materials will be needed?

To make a gun with your own hands you will need:

• The wire is made of metal, the diameter of which is 2 mm, and the length is 12-16 m. The wire will become a spring.
• Duralumin tube. Its internal diameter can vary from 12.5 to 13 mm. The tube will become the basis for the gun barrel. Often masters use brass, which is almost not subject to oxidation in water.
• For the production of the trunk, you can apply an ordinary stick from the skis.
• Two plates of the same shape made of plastic, the thickness of which is 10-12 mm. From the plastic is the handle of the gun. Material for it can also serve as capron, viniplast, beech, oak and aluminum.
• A rod made of metal, the diameter of which is 6-8 mm. It will serve as the basis of the harpoon. You can also use stainless steel or silver.

In order to make a spring underwater gun with your own hands, you will need perseverance and patience, as the work differs laboriousness. The process will require a lot of effort and time, but the result will exceed expectations.

Product Dimensions

The average spring shotgun manufactured at home can be no longer than 900 mm. The distance from the hook to the hole should be at least 75 mm, and the product weight should be 1.5 kg.

Power of homemade device

With the proper observance of all the rules, it can be achieved that the product will characterize a sufficiently large force of a shot to hit a medium-sized fish and a small weight. The range is about 3 m.

Spring manufacture

Many are interested in how to make a spring piston gun with their own hands.

Before processing the wire, it should be heated to 300 ° C and cooled to room temperature. This technology helps to achieve the strength of the spring and its resistance to curvature. The spring is heated and bent so that its ends are perpendicular to the axis.

Begin the assembly of an underwater shotgun at home with exactly the spring. It is the most difficult part to perform, and for its production professionals will need help. The part is made by the turner on the machine, then it is subjected to heat treatment. It is coated against rust.

The diameter of the spring should be 12 mm, and the pitch should be 2 mm. Its length depends on the length of the trunk. Given that the working force of the spring is directed to compression, its length in this form should be greater than the trunk by 10 cm. After producing a number of shots, the spring will be shortened by 1/5. The initial length is taken with allowance for this deformation.

Clip

The clip is one of the components of the underwater gun. Its basis should be brass, the thickness of which is 1 mm. On it from the sides are drilled holes. It is better to cut them after bending the workpiece.

When assembling the clip it will be necessary to solder it to the trunk. It is necessary to adjust details on slits and openings.

Trunk

The length of the trunk should be 600-750 mm. This length is optimal for hunting in water bodies of any type.

At both ends of the pipe, the thread is cut. Then in it a slot for the sear is cut. Its length should be 150-170 mm. Such a groove will allow to regulate the force of a gun's battle by the usual movement of the handle on the trunk. In the trunk holes are made for the rapid exit of water.

A dowel and a bloomer are dug out of the duralumin. A hole is drilled in the plug, into which the harpoon is then inserted to facilitate transportation. When the barrel is ready, it is possible to start producing the trigger mechanism and handle.

Handle and trigger mechanism

In the clamped plates, holes are drilled equal to the diameter of the barrel. Then the contour of the handle is cut out on the plate. On each plate, by means of a milling cutter or file, a selection is made for the starting mechanism, the depth of which is 3.5 mm.

Both halves of the handle should be connected to the barrel and pressed with screws. Before the handle on the barrel by means of a clamping screw, a ring for the support is fixed. This manipulation is carried out in order to prevent the handle from sliding over the trunk. Assembling the handle of the gun is completed by installing the trigger.

The trigger mechanism includes a sear, safety and spring. The manufacture of these components is not particularly difficult and is done on a locksmith.

Making a harpoon

Harpoon is the main part of the weapon. It is made of a strong steel rod. Its diameter should be 5 mm. At the main end, for installation, cut the M5 thread and cut out the hole for the line and harpoon. The rod should be hardened in an oven. In addition, a bushing is cut out for the harpoon. It is better to use for this purpose stainless steel.

Harpoon should have a diameter of 6-8 mm. On the harpoon slides the bushing, to which the tench is attached. The bushing must be restrained in the shank. It absorbs from the ring of PTFE. The shank, which fixes the harpoon, is ground in the form of a collet.

The tip is simple in execution. In addition, a checkbox is used to hold the fish.

The harpoon tip should have a trihedral or tetrahedral, but not a conical sharpening. Such arrows better beat the fish and easily cut scales.

Line straightener

This is the last detail of the gun. It can be made of steel strip. The finished plate is attached to the stem plug by a pair of screws.

Lin wraps under the winding plate. At the same time, it is tied to the front sight. During the production of a shot, the tench leaves easily from under the plate and unwinds.

Making the liner

The insert in the design is designed to fix the flat springs of the return action. As a rule, its basis is textolite. It is glued to the cage, and after that springs are applied to it.

Rivets

The spring rifle is assembled with rivets. Their basis should be strong steel. For winding the harpoon line, a special hook is required, which is made of brass or stainless steel. The hook is soldered to the stem base. Springs in the fuse, as a rule, are used as a stopper for the two main positions. The basis is made of steel, the thickness of which is 0.5 mm. Usually used alloyed grade 65 or carbon category Y8, U10, U10 A.

Safety regulations

The spring gun, the description of which was given in this article, should only be recharged in a pond. When you go ashore, the weapons are necessarily discharged. A shot is made if the target is well traced and the water is clean and transparent.

Using the product

When everything is ready, you need to fill the harpoon in the barrel so that it rests against the stop, then press the spring into the sear until it clicks. The sheptalo is directed upwards, and the barrel is pressed with a bushing. At the trigger moment, the spring performs translational motion, and then returns to its initial position. When the angler presses the trigger mechanism, the sear moves into the groove and releases the space for the spring bushing. Expanding, the spring contributes to the ejection of the harpoon.