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Hi new member building 6 suppressors** Updated for .308

Posted: Thu Jun 02, 2011 9:12 pm
by zevdogs
Hi this is a segment I've already posted other places but I want to become a member hear
It's taken a while to decide what I want to build but I've finally decided on 4 suppressors to build
I've been a machinist for 24 years and have access to a full CNC machine shop with some know how with Gibbs cam.

This is my list
1. One Idea I got from looking at the aac-m4 2000 for my AR
2. two versions of something that looks like the sparrow with improvements, 
one for my sig 22 and the 2nd for a custom build on my m&p15-22
3. A integral suppressor for my ruger 10/22

Each one will take me about a day so it should be pretty quick
Photos to come 

Re: Hi new member building 4 suppressors

Posted: Thu Jun 02, 2011 9:21 pm
by zevdogs
This is my first build on a smith & Wesson m&p 15-22
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And this is the core.. I have a sparrow but I dident want 16 inches of barrel plus 6 inches of suppressor plus I plan on useing hyper volicity ammo
I needed stainless and at the time sparrow dident come in stainless .... I also wanted a larger blast chamber
The center of the baffels have a larger devide wich I think helps out with the high volicity ammo

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The YouTube link
http://www.youtube.com/watch?v=UKpfdf3b ... ata_player

Re: Hi new member building 4 suppressors

Posted: Thu Jun 02, 2011 10:14 pm
by dj_fatstyles
very slick. looking forward to the other cans.

Re: Hi new member building 4 suppressors

Posted: Fri Jun 03, 2011 12:07 am
by jerrykn
Beautiful work.
Looking forward to more, especially the AR

Thanks
for sharing
Jerry

Re: Hi new member building 4 suppressors

Posted: Fri Jun 03, 2011 9:08 am
by zevdogs
This is my suppressed AR-15

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And with out the suppressor I cut the barrel down to 16 and1/4 and made a titainum end concentric to the bore within .0005
The suppressor slides on the barrel with .0005 slip so even if it comes lose half way it will never give a baffel strike

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When I was out testing my new suppressor I met a guy with a lightning link and he was very kind to let me test it with my new build
YouTube link

http://www.youtube.com/watch?v=nfV_Geim ... ata_player

Re: Hi new member building 4 suppressors

Posted: Fri Jun 03, 2011 9:13 am
by zevdogs
This is the baffles I went with they are heat treated 17-4 stainless
They are ground on the O.D to a .001 slip fit and just slide in a 316 stainless tube then both ends are welded
The bore on the baffels is .250 leaving .014 perside
For the .223 bullet


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Re: Hi new member building 4 suppressors

Posted: Fri Jun 03, 2011 9:37 am
by bowhunterslodge
very nice work and great clip..

Re: Hi new member building 4 suppressors

Posted: Sun Jun 05, 2011 6:55 pm
by zevdogs
Rugger 10/22

Just finished my intregal rugger 10/22, the hard part for me was cutting the wood stock out to fit the barrel

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The barrel has been cut down to 8 inches and I have used a wire EDM to cut 60 degree slots into the barrel as a gas relief on the full leanth of the barrel to keep bullets subsonic 
 Then I've threaded the end for this type of suppressor to go on the barrel

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Then to make it as quite as possible I made a 2 inch tube at the end of the suppressor( but inside the large tube) and rolled up steal wool around a 1/4 bar .... Just to give a center for the bullet to pass
And that is at the end of the tube past the suppressor and sealed in side by a threaded end cap , it's like a steel wool  bullet wipe 
 I Plan on this one as a muskrat killer

YouTube http://www.youtube.com/watch?v=fk2Qfd7c ... ata_player
 

Re: Hi new member building 4 suppressors

Posted: Sun Jun 05, 2011 7:02 pm
by zevdogs
Sig 22

Ok just finished one made just for my sig 22
 The baffel design is a little differnt than my m&p but it still works very well
 I didn't have time to program the cnc so the baffels on this one was done free hand on a manual mill

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And the YouTube video
http://www.youtube.com/watch?v=jAGQTzgl ... ata_player

Re: Hi new member building 4 suppressors

Posted: Sun Jun 05, 2011 9:01 pm
by Tbone
Awesome! Great looking work, and sounds good too.

Re: Hi new member building 4 suppressors

Posted: Sun Jun 05, 2011 10:40 pm
by Wicked
zevdogs wrote:This is the baffels I went with they are heat treated 17-4 stainless
They are ground on the O.D to a .001 slip fit and just slide in a 316 stainless tube then both ends are welded
The bore on the baffels is .250 leaving .014 preside For the .223 bullet

Image
Very nice machine work.

Are the baffles cut only .014" per side over bore diameter all the way down the tube? That is super TIGHT!! Most muzzle brakes are bored .250" and they only extend an inch and a half from the end of the barrel. That small bore dimension should make for a very, very quiet suppressor. It doesn't leave much room for error though. Even if the machining is great and the tolerance stack-up is very small, any bullet instability could make trouble.

Will the rifle cycle without the can? How many rounds do you have down it? Wouldn't shoot cheap ammo through that baby. Ever used something like this from JBM to check the stability of the load being used? http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi
Should have a minimum stability factor of 1.5. Try different scenarios by decreasing velocity and/or temperature.

Re: Hi new member building 4 suppressors

Posted: Sun Jun 05, 2011 11:42 pm
by BELT_FED
Is it just me or is the bolt on the 15/22 loud or what.. the first one I build sent me to town looking for a piece of rubber to get the bolt under control lol. I started with baffles close to your stepped cones on my 308 buildwith a aac "train whistle" blast baffle and wasn't happy with it. I went back and done modified omega baffles and kelp the blast baffle, now I'm very happy. It makes a friend gemtech look bad.. but reguardless you have done a great job very good looking machine work

Re: Hi new member building 4 suppressors

Posted: Mon Jun 06, 2011 9:21 am
by zevdogs
Reply to Wicked

My barrel has a 1/7 twist wich helps
The baffles are .014 clearance perside for all the baffles, ( that's the thickness of 4 peices of paper)
The O.D and I.D are machined at the same time that with the extended 1inch on the back keep everything in line
 I've got over 2000 rounds of Russian FMJ through it with the suppressor being taken on and off on full and semi with no problems
 I have had failure to eject a spent round without the suppressor but I don't know if that Is because it needed to be cleaned ... I don't plan on shooting unsuppressed so it's not a problem


Reply to belt_fed
I would like the m&p to cycle softly but it's almost the same as my rugger 10/22
 Thanks for the compliment

Re: Hi new member building 4 suppressors

Posted: Mon Jun 06, 2011 10:00 am
by jimmym40a2
Very nice work thanks for sharing.

Re: Hi new member building 4 suppressors

Posted: Mon Jun 06, 2011 10:13 pm
by Schulze
Great post! What made you decide on the ports in the stepped cone baffles?

Re: Hi new member building 4 suppressors

Posted: Tue Jun 07, 2011 9:14 am
by zevdogs
Schulze wrote:Great post! What made you decide on the ports in the stepped cone baffles?
I like the aac and I thought I could improve on it By not welding each one in place.
That's why mine have an extra inch on the back of the suppressor as to help keep the baffles centerd and in line

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Re: Hi new member building 4 suppressors

Posted: Sat Aug 13, 2011 6:07 pm
by Historian
Zevdogs, standing ovations for masterful machining.

What lathe did you use?

Great video.

Thanks.

Re: Hi new member building 4 suppressors

Posted: Sat Aug 13, 2011 7:41 pm
by Capt. Link.
The barrel has been cut down to 8 inches and I have used a wire EDM to cut 60 degree slots into the barrel as a gas relief on the full leanth of the barrel to keep bullets subsonic
Please more detail on this pic's? Porting with slots unique.

Re: Hi new member building 4 suppressors

Posted: Mon Aug 15, 2011 10:51 pm
by zevdogs
Historian wrote:Zevdogs, standing ovations for masterful machining.

What lathe did you use?

Great video.

Thanks.
Umm the lathe is just your standard engine lathe .. Thanks

The porting with slots on my 60 degree steped cones is just an idea from the AAC m4 photo

Re: Hi new member building 4 suppressors

Posted: Thu Feb 02, 2012 7:07 pm
by zevdogs
My new colt 9mm
Cut barrel down to 10 inches pinned and welded suppressor on so no SBR
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My new version of a K-baffle all 7are 17-4 heat treated stainless steel

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And photos after being shot notice the burn pattern
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Re: Hi new member building 4 suppressors

Posted: Fri Feb 03, 2012 9:37 am
by Historian
Zevdogs, wonderful work, great presentation, inspiring.
Admire your skills. Ah to be that talented in metal.

Thanks.

Re: Hi new member building 4 suppressors

Posted: Fri Feb 03, 2012 9:43 am
by Historian
Wicked wrote:
zevdogs wrote:This is the baffels I went with they are heat treated 17-4 stainless
They are ground on the O.D to a .001 slip fit and just slide in a 316 stainless tube then both ends are welded
The bore on the baffels is .250 leaving .014 preside For the .223 bullet

Image
Very nice machine work.

Are the baffles cut only .014" per side over bore diameter all the way down the tube? That is super TIGHT!! Most muzzle brakes are bored .250" and they only extend an inch and a half from the end of the barrel. That small bore dimension should make for a very, very quiet suppressor. It doesn't leave much room for error though. Even if the machining is great and the tolerance stack-up is very small, any bullet instability could make trouble.

Will the rifle cycle without the can? How many rounds do you have down it? Wouldn't shoot cheap ammo through that baby. Ever used something like this from JBM to check the stability of the load being used? http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi
Should have a minimum stability factor of 1.5. Try different scenarios by decreasing velocity and/or temperature.
Wicked, I plugged in the factors for a 1:8 twist Bully Barrel and got .214. Is this good or bad?
Not sure of direction of merit.
Thanks.

Re: Hi new member building 4 suppressors

Posted: Mon Aug 06, 2012 10:11 am
by zevdogs
Just added a YouTube video of my integral 10/22

http://www.youtube.com/watch?v=fk2Qfd7c ... ata_player

Re: Hi new member building 4 suppressors

Posted: Mon Aug 06, 2012 3:49 pm
by jimmym40a2
Beautiful.

Re: Hi new member building 4 suppressors

Posted: Mon Aug 06, 2012 9:05 pm
by Shift1
Just a cryin shame the bolt is so loud!