Low Signature Systems (Silencers) by the Jolly Roger

Low signature systems (silencers) for improvised small arms weapons can be made from steel gas or water pipe and fittings.

Material Required:

Grenade Container
Steel pipe nipple, 6 in. (15 cm) long - (see table 1 for diameter)
2 steel pipe couplings - (see table 2 for dimensions)
Cotton cloth - (see table 2)
Drill
Absorbent cotton

Procedure:

Drill hole in grenade container at both ends to fit outside diameter of pipe nipple. (see table 1)

         ->    /----------------------\
        /     |                        |
 2.75 in |      )                      ( <-holes
 dia.   \     |                        |
         ->   \-----------------------/
                      
              |-----------------------|
                       5 in.

Drill four rows of holes in pipe nipple. Use table 1 for diameter and location of holes.

            (Note: I suck at ASCII art!)
                            
                        6 in.
        |-----------------------------------|
        _____________________________________ ___
        | O O O O O O O O O O O O O O O O O |  | C (nom. dia.)
        -------------------------------------
 (size of hole)   |                   \ / (space between)
                  B (dia.)             A

Thread one of the pipe couplings on the drilled pipe nipple.
Cut coupling length to allow barrel of weapon to thread fully into low signature system. Barrel should butt against end of the drilled pipe nipple.
Seperate the top half of the grenade container from the bottom half.
Insert the pipe nipple in the drilled hole at the base of the bottom half of the container. Pack theabsorbent cotton inside the container and around the pipe nipple.
Pack the absorbent cotton in top half of grenade container leaving hole in center. Assemble container to the bottom half.
Thread the other coupling onto the pipe nipple.

Note: A longer container and pipe nipple, with same "A" and "B" dimensions as those given, will furthur reduce the signature of the system.

How to use:

Thread the low signature system on the selected weapon securely.
Place the proper cotton wad size into the muzzle end of the system (see table 2)
Load weapon
Weapon is now ready for use

TABLE 1 -- Low Signature System Dimensions

                                    (Coupling)  Holes per   (4 rows)
           A         B         C         D         Row        Total
--------------------------------------------------------------------
.45 cal    3/8       1/4       3/8       3/8       12           48

.38 cal    3/8       1/4       1/4       1/4       12           48

  9 mm     3/8       1/4       1/4       1/4       12           48

7.62 mm    3/8       1/4       1/4       1/4       12           48

.22 cal    1/4       5/32      1/8*      1/8       14           50
--------------------------------------------------------------------
           *Extra Heavy Pipe
       (All dimensions in inches)

TABLE 2 -- Cotton Wadding - Sizes

-------------------------------------------------
Weapon                        Cotton Wadding Size
-------------------------------------------------
.45 cal                       1-1/2 x 6 inches

.38 cal                       1 x 4 inches
     
  9 mm                        1 x 4 inches

7.62 mm                       1 x 4 inches

.22 cal                       Not needed
-------------------------------------------------

-=Exodus=-