How to make a Silencer

How to make a Silencer

How to make a silencer and the knowledge to manufacture them from unconventional materials could be a critical component to your survival repertoire when the need to eliminate a target in silence is required. The following directions are simple, and in states like Nevada silencers are legal but check your state’s laws before attempting to make a silencer. For this example we are using a .22 caliber pistol, but these instructions can be applied to other calibers.

How to make a silencer from a Maglite


  • Maglite 2D Cell
  • Screwdriver
  • Hammer
  • PVC
  • Fabric/Steel Wool
  • MPH Tape (Duct Tape)
  1. First you must completely disassemble your Maglite flash light, removing all of the guts and leaving on the cylinder housing. You can use the hammer and screwdriver to eject internal components.
  2. You can use tape and/or PVC around the inner housing of your Maglite to form a snug fit around the barrel, if using PVC ensure it slides tights into the housing tightly to prevent a breakdown in materials after use.
  3. Use tape to line the outside of your PVC to secure the Suppressor to the Barrel.
  4. Read the following article to under the dynamics of a suppressor.
  5. Test fire with proper precaution.

Intermediate Silencer


  • Fiberglass Mat
  • Fiberglass Resin and Hardener
  • Drill Rod 7/32″ (.22 Caliber Specific)
  • 12″ of 1/4″ brake line
  • 12″ 1 1/2″ PVC tubing + 2 end caps
  • One Roll Masking Tape
  • 1/8″ and 3/16″ drill bits
  • Rubber Bands
  • Razor Blades
  • Eye Dropper
  • White Lithium Grease
  • 6 Wood Screws
  • 80X Sand Paper
  • Steel Wool
How to make a Silencer Construction Part I
  1. Cut a 10″ piece from the brake line and drill a series of evenly distributed 1/8″ ventilation holes across it’s length starting 1 1/2″ from the end of the brake line.
  2. Now enlarge those holes with a 3/16″ drill bit.
  3. Use your masking tape to mask off the end of the gun barrel and do no allow the tape to wrinkle while keeping tight.
  4. Place the drill rod down the barrel to keep the brake line aligned. Perfect alignment is extremely important. Sometimes the drill rod will be a little too large to fit into the barrel. In this case, chuck the drill rod into a drill and turn it down with a file or sandpaper, a little at a time, until it fits perfectly.

How to make a Silencer Step One

How to make a Silencer Construction Part II
  1. Wrap glass mat around the end of the gun barrel and brake line three times. Secure it in place with rubber bands every half inch. The glass mat should be wrapped about two
    inches behind the sight and up to the first holes on the brake line.
  2. Now mix the resin. A few spoonfuls will do. Mix it two or three times hotter than the package directions.
  3. Brace the weapon in an upright position and dab the resin onto the glass mat with a brush. Keep applying resin until the mat is no longer white but becomes transparent from absorption of the resin.
  4. As soon as the resin starts to harden and becomes tacky, detach the brake line and fiberglass from the barrel. Do this quickly before the resin hardens completely.
    First use a razor blade to cut a notch behind the front sight so that the whole piece can be removed. Then push on the fiberglass to slide it off. Do not pull it off from the other end as the alignment will be thrown off.
How to make a Silencer Step One

Note the pattern of the drill holes.

How to make a Silencer Construction Part III
  1. After removal from the gun barrel, peel out the tape and allow it to finish hardening.
    Use a sander, grinder or 80x sandpaper to smooth out the hardened rough surface.
    Next, grind the sides down about halfway, but do not grind past the point where the front sight makes contact. Cut it down until the barrel fits snugly and easily.
  2. Stand the glassed brake line upright in a vise.
  3. 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 between the brake line and fiberglass coupling added strength. Acetone can be used to clean the eyedropper.
  4. Cut the PVC tubing to the desired length. A longer silencer will be necessary for more powerful cartridges.
  5. Drill a large hole in the center of one end cap, making it large enough to fit on the fiberglass end to the point where the front sight makes contact.
  6. Drill a series of 3/16″ holes in the bottom of the end cap.
  7. Wrap masking tape around the end cap to cover the holes.
  8. Stand the cap with the inside tube inserted into a vise. Get the cap level and straight with the brake line.
  9. Cut two dozen or so 1/2″ squares of fiberglass mat and fill the end cap with it up past the level of the row of holes.
  10. Mix resin and pour it over the cut matting to a point about 1/4″ 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 withstand the muzzle blast.
  11. When the inside is hardened, turn the assembly over and fiberglass around the backside of the end cap for added strength. 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 brake line as you look in the open end of the PVC.
  12. Now drill a 1/8″ hole in three places around the tube about 1/4″ from the lip of the cap. Take the brake line out and enlarge the holes in the cap to 3/16″ Replace the brake line and tighten it down with three small wood screws. Trim the brake line down until it extends about 1/2″ beyond the PVC tube.
  13. Sharpen one end of the drill rod to a point and use it as a center-punch. Stand the assembly up with the solid end cap down. Drop the drill rod down the brake line to get a true center mark.
  14. Using a drill bit slightly larger than the outside diameter of the brake line, remove the end cap and drill the hole.
  15. Cut a circle of 1/4″ thick rubber which fits snug into the end cap. This rubber swipe will help prevent any hot gasses from escaping even after many shot have been fired through it because rubber tends to stretch and rip rather that have material blasted out of it by a gunshot. The hole will reseal itself after firing keeping the system nice and tight. Replace this swipe whenever the bullet hole becomes too large to contain gasses. This step will make a big difference, particularly in small silencers.
  16. Replace the cap on the open end of the PVC tube and drill three 1/8″ holes around the cap as before for wood screws.
  17. The brake line should push into and slightly stretch the rubber swipe. The swipe should not stick out past the face of the cap. Grind off the end of the brake line to get a perfect fit.
    Unfold sections of steel wool and roll into long strands.
  18. Apply white lithium grease to each strand before feeding them into the silencer tube in a circular motion. The white grease helps to cool the hot gasses of the muzzle blast, thereby reducing the loudness of the gunshot. Pack the steel wool tight with a stick, continue this until the silencer tube is completely full.

How to make a Silencer Step Three

How to make a Silencer Construction Part IV
  1. Replace the end cap with the three screws.
  2. Paint the finished silencer flat black and attach it to your weapon. Proper alignment can be ensured by using a hose clamp around the barrel extension behind the front sight. Test as described in the Silenced .22 LR Weapons.
  3. This silencer can be counted on to function for over 300 rounds before it will be necessary to open it up and repack it with new steel wool and lithium grease.

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About CMF Contributor

Certified NRA Instructor, Certified Military Platform and Performance Orientated Instructor, Training Personnel, and Emergency Management. Currently working towards M.A. Emergency Management - 101ABN/82NDABN - Charlie Wardogs

14 suggestions on “How to make a Silencer

  1. Pingback: Prepper 22lr Suppressor Case | Extreme Survival Guide

  2. Pingback: Prepper 22 Rifle Silencers How To | Extreme Survival Guide

  3. Additionally, there is nothing that says you cannot register the silencer appropriately, or apply through legal means to manufacture one. Nowhere in the article does it state to manufacture and possess it illegally. Information itself is NOT illegal, no matter what people may think of it. This is still a country of freedoms (supposedly), and knowledge is not restricted (supposedly).

    This information is equally useful for the average person to be able to identify a improvised silencer, and to therefore have an increased awareness of potential threat/concern regarding the person in possession of it. It will help the average person with limited background to discern an IED from an improvised silencer. Again, knowledge is NEVER bad or wrong to have, nor does knowledge itself make you a criminal or more likely to commit criminal acts.

    That said, its not as if people who intend to build illegally ONLY have this resource. If it is not posted here, it is posted somewhere else. The information is out there. I have personally seen probably 7 or 8 different improvised silencer DIY’s on the internet. I am not a criminal (in fact, I am a former police officer in California), and mere knowledge of this construction process does not suddenly make me run out and become a felon and manufacture one. I am going through the legal process of buying and obtaining one (in Washington state it is legal for citizens to possess and use one). Further, there is nothing to state that I cannot (since it is lawful to possess one in my state) apply for and manufacture and register one with BATF through all legal processes. For someone of limited economical means, this remains a viable option as opposed to the $1,600 silencer I’m looking at. Afterall, if some business somewhere has lawful authority to manufacture a silencer/suppressor, then that means there IS a lawful route to do it.

    Whether we or you like it or not. At least here, the people who follow this site purport to adhere to the constitution and law of the land. Of anywhere to have this information posted, this is as good a site as any.

    Former and current cops, former and current military, etc. This is where the good guys are.

  4. i have TT or Norinco 30 Caliber pistol i have silencer when i shot with it it silenced but not through the shell of the bullet out of pistol.. so i throw out manually ..
    i think my silencer totally remove the presure to force the pistol to remove the shel..
    can you tell me what i do it with it.

    • Sounds like yours is removing to much back pressure. I will assume this is a home made suppressor and if that is the case the length may be to long (I.E. its removing to much back pressure that the gun wont fully cycle). If this is a manufacture made then contact them. There really is two ways to fix this. One is if your pistol is more capable at shooting +P or a higher pressure self defense round it will also increase the back pressure. If you are just shooting shity ammo that could be the problem as well. Then the other is changing the suppressor if its homemade or talk to the manufacture if its a purchased. Also remember a suppressor meant for a rifle will not work right or can even cause very bad problems on a pistol and the reverse can be true.

      Ok here some the normal warning. I am not a gunsmith. And I’m not offering legal advise for the use or manufacture of a suppressor/silencer. Modifying a manufacture product could void its warranty or cause physical harm to yourself or others. Proceed at your own risk and responsibility.

  5. Stupid idea on how to teach people to become felons. Silencers are NFA regulated items. Creating one without approval from BATF is highly illegal and a felony.

    • I basically agree with you, but when the s… hits the fan, I would like to have a way to shoot small game without advertising where I am. As a vet and a senior citizen, I agree that some very irresponsible people my use this information wrongly, but it will help me prepare just as a soldier prepares for war while hoping he never has to go to war.

      • I own 3 legal silencers. Remember that you have to stay subsonic or there is a sonic crack which is still pretty loud. my .22LR silencer on my 10/22 is scared-quiet. the bolt slap makes more noise than the bullet. Go buy a LEGAL can with a living trust…well worth the investment. My .45 acp is quiet enough that the action noise and the round discharging is quieter than the hardball hitting a target. STAY SUBSONIC!!!

    • Creating one and knowing how to are completely different things. Its a choice to break the law, clearly you believe that knowledge should be restricted.. People shouldnt be trusted. Maybe you’re right, maybe we should just round up everyone and put them in a death camp. Oh wait, Obama is doing that with Obamacare and its f*cking death panels.

  6. Easier way… get a threaded barrel ahead of time. Make or buy adapter to thread on and fit an automobile oil filter screw together. .. done. Look on amazon SOLVENT TRAP ADAPTER…

  7. Pingback: Prepping Ideas – Are You Prepared Enough? | Be Prepared For The Coming Emergency.

  8. The problem is that unless you get it perfectly straight, the suppressor is wobbling or crooked and the bullet won’t travel down the narrow hole. Why not just buy a cheap maglite adapter on ebay that will allow a precise fit because it’s threaded 1/2×28 TPI?
    Then, you can just carry around a maglite and convert it in seconds.

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