.22
LR Silencer Model:
CNC2000
A
lot of people don't know this, but you
can legally build your own
silencer. This is assuming you can
legally own a firearm and the silencer
is legal in your state. In order to
build your own silencer, you must first
fill out a Form 1, get finger printed,
fill out a citizenship form, get your chief
of police to sign the Form 1 and send
the BATF a check for $200 along with all
your paperwork. You can
download all the forms from the BATF
website. Here are the forms you'll need to fill
out...
(2
copies) ATF F 5320.1
-- Application to Make and Register a Firearm
(1
copy) ATF F 5330.20
-- Certification of Compliance with 18 U.S.C 922(g)(5)(B) --
citizenship form
You'll
have to get 2 ATF finger print cards
from your local Class III firearm
dealer, or you can order them from the
BATF at this link.
It's the "FBI FD-258LE - NFA, Imports ORI DCATF0100"
After
you get all the forms filled out, you
then send them to the BATF along with
your check for $200. Do your best
to forget about the forms, because it's
going to take 90-120 days before they
are approved. But hang in there
because if you can legally own a
firearm, then you can legally build your own
silencer. You can find more info
about NFA firearms on the AR15.com
forum.
As
soon as my approved paperwork is
returned to me, I'll then and only then
be able to build my own silencer.
The silencer I'll be building will be in
a .22LR caliber and designed off of the
H&K MP5SD silencer. The MP5SD
is designed for 9mm, but I'm going to be
making some changes in order to use it
with a .22LR pistol. Below you can see
what the inside of the MP5SD looks like
(pic from www.hkpro.com)...
After
a long wait (about 3 months), I finally
got my paperwork approved. Instead
of trying to deal with all the little
sheet metal parts to make the H&K
design, I decided to go with a K baffle
design. The K baffles would be
much easier to make, and most
importantly I wouldn't have to worry
about welding all the little sheet metal
pieces together while at the same time
making sure that everything is exactly
lined up. I done some reading on
different websites to get a better feel for how
silencers worked. During my
research, I found out that there are
several different designs out
there. Below you can see what my K
baffles look like...
In
my design, there are five K baffles and
one blast chamber. I've read that
there needs to be a blast chamber for
most of the gases to expand right out of
the barrel. The whole silencer is
made out of 2024 aluminum except for the
end cap that screws onto the end of the
barrel. I made this piece out of
303 stainless steel, since it would wear
out quicker if it was aluminum. I
drilled six holes in both the end caps
so I could use a custom made spanner
wrench to install and remove the end
caps. These holes do not go all
the way through the caps, just deep
enough for the studs on the spanner
wrench to engage the caps. Below
are pics of the finished
silencer...
I
have sent in more paperwork to the BATF.
This time I sent in paperwork to do a
short barrel rifle (SBR) and another
silencer for the AR45. My plan is
to use a threaded 7" barrel on the
AR45 and then attach a silencer that is
about 12" long. The end of
the barrel will set about 3" inside
the silencer. So once the silencer
is attached, it will look like the AR45
just has a big 16" long bull
barrel. I will be using a set of
quad rail free float hand guards.
It should be a pretty cool little setup.
Below
you will find a blueprint of my K-baffle
design. It is the only blueprint I
made during the build. The rest of
the parts I just machined as I finished
the silencer...
