HIT MAN: The classic homemade pistol silencer
The information that you are about to read was taken from one of the most controversial books ever written. Hit Man was pulled from shelves and publication was terminated in 1993 after the information was said to have been used in a mass murder. Below is the definition of this book taken from Wikipedia:
Hit Man: A Technical Manual for Independent Contractors is a book written under the pseudonym Rex Feral and published by Paladin Press in 1983. It has been claimed that the book started life as a detailed crime novel written by a Florida housewife, and that the format was later changed to appeal to Paladin's reader base. The book portrays itself as a how-to manual on starting a career as a hit man, fulfilling contracts.
Existing copies at Paladin Press were destroyed after the book was found to be used as a guide during a triple murder in 1993 (see below), but it can still be found online or can be purchased used from independent sellers. It is believed that 13,000 copies were sold, although Reason Magazine estimates there are 20,000 copies of the book in existence.
In this article I am going to discuss the methods described in this book to build an improvised silencer for a standard, fixed-barrel .22 caliber pistol. This technique is very inexpensive (you can build a working model for around $40.00). The techniques are very effective and it is worth noting that production and possession of an assembled silencer or the parts used to make a silencer are illegal in the United States and many other countries. This information is presented for information purposes ONLY and you are strongly encourage NOT to attempt to build a silencer unless you have the proper authorization from the government.
What is a silencer?
In order to understand how to construct an inexpensive yet effective pistol silencer we must first understand how and why a silencer works and be aware of the limitations inherent in all sound supperssion.
What makes a gunshot loud?
The rapport, or the sound produced when firing a gun is caused by three different actions. First, the gunpowder, or propellant heats up gasses and those hot gasses exit the barrel of the gun and collide with cooler air outside and create what can be approximated to "thunder". Second, the bullet, or projectile, if it is traveling faster than the speed of sound (1130 feet per second) will create a small sonic boom, or ballistic "crack" when it breaks the sound barrier. Lastly, the action, or moving parts of an automatic or semi-automatic gun creates a much quieter, yet noticeable sound when the metal parts work to eject the spent shell casing and load a fresh round. All but the last element of sound can be reduced by employing a silencer.
A silencer, or sound suppressor works by containing the hot, rapidly moving gasses expelled by the burning propellant in the ammunition and allowing those cooled gasses to escape at a slower than normal rate. This reduced the "thunder" sound of the gunshot. Many silencer, including the one described in this article, employ what is known as a "wipe" to slow the speed of the bullet and to further contain and slow the escape of gasses. A wipe is simply a piece of flexible material that comes into physical contact with the projectile and thereby causes it to slow down to reduce the "ballistic crack". Used together, these two methods will produce a very effective silencer for any small bore gun.
What you will need: Materials
- 7/32" Drill Rod orWooden Dowel (hardware Store)
- 1 Foot of 1.25" PVC Pipe (Hardware Store)
- 12" of 1/4" Brake Line (Auto Parts Store)
- 1 Quart of Fiberglass Resin and Hardener (Hardware or Auto parts Store)
- 1 Yard of Thin Fiberglass Mat (Hardware or Auto Parts Store)
- 1 Roll of Masking Tape (Hardware or Auto Parts Store)
- 1 1/8" Drill Bit (Hardware Store)
- 1 3/16" Drill Bit (Hardware Store)
- Several Rubber Bands
- Several Single Side Razor Blades
- 80 Grit Sandpaper (Hardware or Auto Parts Store)
- 6 Small Wood Screws
- 1 Box Steel Wool (Hardware or Auto Parts Store)
- 1 Container of White Lithium Grease
Making it all work:
Cut a 10-inch section from the brake line. See figure 1. Drill a set of 1/8 inch holes down the length of the tube going in one side and out the other. The holes go all the way through. Notice in the photograph that the holes begin 1-1/2 inches from the end of the tube that fits on the gun.
Next, take a 3/16 inch drill bit and enlarge the holes. See figure 2.
Using masking tape and keeping the tape as free of wrinkles as possible, mask off about six inches of the gun barrel and the end of the barrel. Use only masking tape. Duct tape is too thick and would make for an improper fit. See figure 3.
Then place the drill rod down the barrel to keep the brake tube aligned. This perfect alignment is extremely important.
If the drill rod you purchase is a little too large, as sometimes happens, put it in a drill and using a file and sandpaper (80 grit), turn down the first six inches until it will fit inside the gun barrel. I operate the drill from the floor with my foot, letting the rod spin between my knees as I reduce the size. Check regularly until you achieve a perfect fit. If you grind the rod too small, cut it off and start over. Fit must be tight with no play.
Wrap glass mat around the gun and tube three times. Secure it with string or rubber bands every half inch to keep it tight and in place. The glass should be wrapped about two inches behind the sight and up to the first hold on the tube.
Now mix the resin. About a shot glassful will do. Mix it two or three times hotter than the package directions.
Brace the gun in an upright position and dab the resin into the glass cloth with a stubby brush. Keep dabbling until the cloth is no longer white but has become transparent from absorption of the resin.
As soon as the glass is tacky to touch without sticking (times differs according to weather conditions and humidity), it is time to remove the piece from the barrel. Move fast!
First, take a razor blade and cut a notch behind the sight so the piece can be removed. Then push on the glass to slide it off. Do not pull on the tube.
After removing the gun barrel, peel out the tape and allow it to finish hardening. You must work quickly. If you let the glass harden too much on the gun, you will have to cut it off and begin again.
Use a grinder and 80 grit sandpaper to smooth the hardening rough surface.
Next, grind the sides down about halfway, but do not grind past the point where the front of the sight makes contact. Cut it down until the barrel fits easily and snugly.
Stand the glassed inner tube upright in a vise.
Mix a small amount of resin and use an eyedropper to fill in any interior holes or air bubbles until the solid fiberglass is level with the steel tube end. This will give the junction of the steel inner tube and glass coupling added strength.
Clean the eyedropper with acetone.
Cut the PVC tube to desired length. This one is eight inches.
Drill a large hole in the center of one cap, making it large enough to fit on the glass end to the point where the sight makes contact.
Then drill small holes all around the cap at the bottom, as shown, with a 3/16 bit.
Wrap masking tape around the cap to cover the holes.
Stand the cap with the inside tube inserted into a vise. Get the cap level and straight with the tube.
Cut a lot of 1/2 inch square pieces of fiberglass matting and fill the cap with it up past the level of the small holes.
Mix resin and pour it over the cut glass to a point about 1/4 inch above the holes and allow it to dry before removing the cap from the vise. Don't worry about any resin that leaks out around the base hole. Resin fills the small holes, making the tube strong enough to take the blast when you fire the gun.
When the inside is hardened, turn the assembly over and add glass around the backside of the cap for added strength as shown. Avoid getting resin in the opening where the barrel fits.
Place the finished cap and inner tube on one end of the PVC tubing that has already been cut to size. Center the inner tube as you look in the open end of the PVC.
Now drill a 1/8 inch hole in three place around the tube about 1/4 inch from the lip of the cap.
Take the inner tube out and enlarge the holes in the cap to 3/16 inch.
Replace the inner tube and tighten it down with three small wood screws.
Trim the inside tube down until it extends about 1/2 inch beyond the outside PVC tube.
Sharpen one end of the drill rod to a point and use as a punch. Stand the tube up with the solid cap down. Then drop the drill rod down the inner tube to get a true center mark.
Find a drill bit a little larger than the outside diameter of the inner tube. Remove the cap and drill the hole.
Replace the cap on the open end of the PVC and drill three 1/8 inch holes around the cap as before for wood screw.
Grind off any inner tube that sticks out. make it flush with the face of the cap.
Unfold the sections of steel wool and roll between palms to make strands as shown.
Feed the strands into the silencer tube in a circular motion, packing the wool tight with a stick. Do this until the tube is completely full.
Replace the end cap with the three screws.
Paint the finished silencer black and attach it to your weapons. You may want to ensure proper alignment by wrapping tape or placing a hose clamp around the extension behind the sight.
THE FINISHED PRODUCT
Your finished product is whisper-quiet, the way a silencer is supposed to be! It is inexpensive, effective and reusable for over four hundred rounds before you will need to repack.
This article is sponsored by my report on Adengage. Please engage in your own research before you make any decisions.