Exact measurements for making a 9mm silencer

Yes, it can be legal to make a silencer. For everything Form-1, from silencer designs that are easily made, to filing forms with the BATF, to 3D modeling. Remember, you must have an approved BATF Form-1 to make a silencer. All NFA laws apply.

Moderators: mpallett, bakerjw

Post Reply
Qasim
New Member
Posts: 8
Joined: Wed Aug 20, 2014 9:54 am

Exact measurements for making a 9mm silencer

Post by Qasim »

Hi guys, Qasim here from Kashmir. I am newbie here. For the first time i am building my own silencer using lathe. I will use silencer on my Beretta 92fs.
The design of the silencer is the one with blast chamber and k-baffles.
Here are the details i want to know from Pros.
a) The total length of the silencer.
b) The total outside and inside diameter of the silencer.
c) The total length and width of k-baffle.
d) The total number of k-baffles i should use.
e) The total length of blast chamber.
f) The diameter of the hole of k-baffle and end cap for 9mm caliber .
I will highly appreciate any other information and guidance :)
Sorry for my bad English (it isn't my mother tongue) :p
User avatar
Dr.K
Silent But Deadly
Posts: 632
Joined: Sun Jun 10, 2007 8:32 pm
Location: Webster Parish

Re: Exact measurements for making a 9mm silencer

Post by Dr.K »

Me too bud.

I'm sure you can find all your answers just looking around a little bit.
Kyle O.
Qasim
New Member
Posts: 8
Joined: Wed Aug 20, 2014 9:54 am

Re: Exact measurements for making a 9mm silencer

Post by Qasim »

I am looking for a good long while,yet i haven't find any thing relevant to my concern... :(
User avatar
doubloon
Silent But Deadly
Posts: 11897
Joined: Wed Dec 31, 2008 11:02 pm
Location: Houston-ish

Re: Exact measurements for making a 9mm silencer

Post by doubloon »

copy and follow the link in my signature next to Complete Form 1s
http://www.youtube.com/watch?v=BDtd2jNIwAU MUSAFAR!
http://www.youtube.com/watch?v=8CrOL-ydFMI This is Water DavidW
Complete Form 1s http://www.silencertalk.com/forum/viewtopic.php?f=10&t=79895
User avatar
john.t.little1
Silent But Deadly
Posts: 243
Joined: Thu Nov 24, 2011 12:13 pm
Location: florida/iraq

Re: Exact measurements for making a 9mm silencer

Post by john.t.little1 »

11.00 long ,2.00 OD, 1.75 ID, BLAST CHAMBER 3.75, K length 1.25, qty of K's 4, width of K 1.73 "roughly" make to fit inside of tube. Bore anywhere from .400 to .420... All joking aside look for the thread where it lists the complete builds. Plenty of stuff there to duplicate. Seeing as English is as good as most American teens these days here's links:

Complete builds thread: viewtopic.php?f=10&t=79895

A 9mm: viewtopic.php?f=10&t=79673
"A man is known by the silence he keeps. - Oliver Herford"
"Gunpowder, treason and plot. I see no reason why gunpowder, treason
Should ever be forgot..."
User avatar
gunny50
Silent But Deadly
Posts: 782
Joined: Wed Jan 23, 2008 5:11 am
Location: EU

Re: Exact measurements for making a 9mm silencer

Post by gunny50 »

I have only one question,

ARE THEY LEGAL TO BUILD OR POSES IN YOUR COUNTRY?

Gunny
Qasim
New Member
Posts: 8
Joined: Wed Aug 20, 2014 9:54 am

Re: Exact measurements for making a 9mm silencer

Post by Qasim »

john.t.little1 wrote:11.00 long ,2.00 OD, 1.75 ID, BLAST CHAMBER 3.75, K length 1.25, qty of K's 4, width of K 1.73 "roughly" make to fit inside of tube. Bore anywhere from .400 to .420... All joking aside look for the thread where it lists the complete builds. Plenty of stuff there to duplicate. Seeing as English is as good as most American teens these days here's links:

Complete builds thread: viewtopic.php?f=10&t=79895

A 9mm: viewtopic.php?f=10&t=79673


I think it is too bulky :p
Guys What you say about these dimensions:
8" long, 1.375" outside, k length 1", k width = inside diameter of tube, qty of K's at least 5.
Last edited by Qasim on Thu Aug 21, 2014 3:45 am, edited 1 time in total.
Qasim
New Member
Posts: 8
Joined: Wed Aug 20, 2014 9:54 am

Re: Exact measurements for making a 9mm silencer

Post by Qasim »

gunny50 wrote:I have only one question,

ARE THEY LEGAL TO BUILD OR POSES IN YOUR COUNTRY?

Gunny
yup....
BinaryAndy
Silent Operator
Posts: 99
Joined: Tue May 06, 2014 4:05 pm
Location: Lancaster County, PA

Re: Exact measurements for making a 9mm silencer

Post by BinaryAndy »

Those outside dimensions (1.375x8) are pretty much exactly the industry standard for 9mm, so that's a good place to start. The proper length of a baffle is a function of its diameter and its design. I think you'll find a well designed K in a can that size will end up somewhat less than an inch long.
Andy Gamble
Binary Arms
07/02
User avatar
SPdotCOM
Member
Posts: 14
Joined: Sun Aug 03, 2014 9:41 pm
Location: WWW
Contact:

Re: Exact measurements for making a 9mm silencer

Post by SPdotCOM »

Go to the following Link and click on the second Pic. There you can grab some dimensions for a 9 mm K-Baffle:

http://www.silencer-plans.com/shop/view ... ductid=159

Using something like that, you should end up with a +-9 inches long Can, 7-8 K's and a Recoil Booster. Those use 60 degrees but one can stack more (or make the Can shorter) if going wider.

Best,

Paul
www.Silencer-Plans.com
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: Exact measurements for making a 9mm silencer

Post by Historian »

From the back of the room, a little Oliver Twist ( 8 per inch? :) ) voice
chimes in " ... have you considered a Beretta Px4 Storm Full Size .45 ACP Pistol, Sir?"

.45 subsonic; superior to 9mm, especially when being bum rushed by 300 pound
mountain of flesh not effected by multiple 9mms.


Unless you have already committed to the 9mm and just want to make holes in paper.

" .45, when you absolutely, positively, want to get home safely"
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: Exact measurements for making a 9mm silencer

Post by Historian »

User avatar
gunny50
Silent But Deadly
Posts: 782
Joined: Wed Jan 23, 2008 5:11 am
Location: EU

Re: Exact measurements for making a 9mm silencer

Post by gunny50 »

SPdotCOM wrote:Go to the following Link and click on the second Pic. There you can grab some dimensions for a 9 mm K-Baffle:
http://www.silencer-plans.com/shop/view ... ductid=159
Using something like that, you should end up with a +-9 inches long Can, 7-8 K's and a Recoil Booster. Those use 60 degrees but one can stack more (or make the Can shorter) if going wider.
Best,
Paul

Paul, nice of you to try to help him, It's a place to start.
I do think these would work but its not hard to outperform your K's with just a little change here and there.
Less weight, change and ad some angles, stronger and better performing.
But thats just me, thinking out loud.
All depending one's machining capability's of course.

Gunny
User avatar
SPdotCOM
Member
Posts: 14
Joined: Sun Aug 03, 2014 9:41 pm
Location: WWW
Contact:

Re: Exact measurements for making a 9mm silencer

Post by SPdotCOM »

Sure, anyone can outperform this one; me too but getting into more complex/risky machining.
This one is just one of the best you can have while still being in the "easy" side of the build (ie. porting is made using jigs and standard ball end mills, taps and shoulders are designed to turn the final OD with the stack easily assembled, inner cone is suitable for a standard countersink, ...).
Sometimes, one can get lost looking for perfection while ignoring it's limitations.

Best,

Paul
www.Silencer-Plans.com
Qasim
New Member
Posts: 8
Joined: Wed Aug 20, 2014 9:54 am

Re: Exact measurements for making a 9mm silencer

Post by Qasim »

Thanks to all for sharing your opinions and information... :) I will comeback soon with my work.... :)
Post Reply