Form 1 / Omega baffle build .22 rifle can~

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.

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cal50
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Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Sun Feb 14, 2016 4:59 pm

Got my approval for my latest project can. I wanted a high volume can for a .22 rimfire rifle ( M&P15-22 ) . My parameters were all titanium & stainless steel construction. I decided on a tube OAL length of 8.250" with threaded end caps. My tube is grade 9 titanium with grade 5 titanium end caps. Internal baffles are 304 stainless steel.

I always admired the Omega pattern baffle. Its ingenious and also patented so I contacted the patent holder/s and asked for permission which they so graciously granted for my personal project. My internal baffles are near completion and I have to face and thread the tube and make the end caps.

Time permitting I hope get it wrapped up in the near future. That damn work thing cuts into play time.....


Tube, a chunk of grade 5 Ti and some baffles waiting for their new home~

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Capt. Link.
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by Capt. Link. » Sun Feb 14, 2016 6:19 pm

Very nicely machined.I noticed the trough modification unique.Must post a field report when all complete.
The only reason after 243 years the government now wants to disarm you is they intend to do something you would shoot them for!
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by silencer_kid » Sun Feb 14, 2016 6:29 pm

looks heavy. very nice.

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Re: Form 1 / Omega baffle build .22 rifle can~

Post by smustian » Sun Feb 14, 2016 7:05 pm

Wish I had the tools and the knowledge to do things like that.

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cal50
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Sun Feb 14, 2016 7:43 pm

Capt. Link. wrote:Very nicely machined.I noticed the trough modification unique.Must post a field report when all complete.
Thx.
I cheated and used a CNC with 4th axis which saved me a LOT of hand cranking........
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cal50
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Sun Feb 14, 2016 7:45 pm

silencer_kid wrote:looks heavy. very nice.

The added weight is less noticeable on a rifle can.
Each baffle is slightly over 20 grams in weight so I will have to see what the total is once finished.
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by Capt. Link. » Sun Feb 14, 2016 8:22 pm

cal50 wrote:
Capt. Link. wrote:Very nicely machined.I noticed the trough modification unique.Must post a field report when all complete.
Thx.
I cheated and used a CNC with 4th axis which saved me a LOT of hand cranking........
Cheating would be someone else doing the work you just conserved energy. :lol:
The only reason after 243 years the government now wants to disarm you is they intend to do something you would shoot them for!
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by mcrump » Mon Feb 15, 2016 8:05 pm

Capt. Link. wrote:
cal50 wrote:
Capt. Link. wrote:Very nicely machined.I noticed the trough modification unique.Must post a field report when all complete.
Thx.
I cheated and used a CNC with 4th axis which saved me a LOT of hand cranking........
Cheating would be someone else doing the work you just conserved energy. :lol:
Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC?
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cal50
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Mon Feb 15, 2016 8:29 pm

mcrump wrote:
Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC?


https://grabcad.com/library/omega-baffle
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by Bendersquint » Mon Feb 15, 2016 9:14 pm

cal50 wrote:
mcrump wrote:
Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC?


https://grabcad.com/library/omega-baffle
Did you use that file as it is on GrabCAD for your baffles? Or did you apply changes to it, with a few changes the difference in sound reduction is notable.

Good job on the machining, what CNC mill did you use?

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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Mon Feb 15, 2016 9:28 pm

Bendersquint wrote:
cal50 wrote:
mcrump wrote:
Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC?


https://grabcad.com/library/omega-baffle
Did you use that file as it is on GrabCAD for your baffles? Or did you apply changes to it, with a few changes the difference in sound reduction is notable.

Good job on the machining, what CNC mill did you use?


Slight changes but nothing major.....essentially the same with a larger volume tube to compensate for any problems I build into it.
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cal50
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Mon Feb 15, 2016 9:36 pm

(What changes help the Omega ???)

I have seen added side hole porting on a omega variation but nothing really solid report wise for metering numbers.
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Tue Feb 23, 2016 8:51 pm

Not much spare time to cut threads but have my host rifle ready to go.....

S&W MP15-22 with some upgraded parts. I ditched the plastic quad factory rail and put an aluminum YHM quad rail on it its place. MI flip sights for BUIS while my Vortex SPARC II is on the way. Magpul "real" butt stock in place of the thing S&W put on it.

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Re: Form 1 / Omega baffle build .22 rifle can~

Post by curtistactical » Tue Feb 23, 2016 9:19 pm

Nice looking work! CNC or not you can always tell when someone takes pride in the work they do.
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by Historian » Wed Feb 24, 2016 2:23 pm

Cal50, please accept my admiration for your
master work. Having seen master Tool & Die Makers
starting as freshman over ½ century ago I especially
appreciate a Sensei of Stainless.


Oh to be able to turn my Atlas 618 into a CNC machine. :) :)

Best

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cal50
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by cal50 » Wed Feb 24, 2016 4:36 pm

Historian wrote:Cal50, please accept my admiration for your
master work. Having seen master Tool & Die Makers
starting as freshman over ½ century ago I especially
appreciate a Sensei of Stainless.


Oh to be able to turn my Atlas 618 into a CNC machine. :) :)

Best

The only two materials I personally dislike machining are 304 & Nitronic series stainless steel. I wanted baffles, tube and end caps that I could use the "dip" to clean so stainless was my 1st selection and I am liking titanium (except the cost) . 304 was the winner because I had CNC access for this project a free bar of material & coolant on the tooling. 303 is great to machine and even 316 is not bad but 304 has always been "gummy" on tooling. This 304 turned nice and not a huge amount of milling required.

I do most of my work on my Logan lathe, knee mill and rotary table but the CNC saved me countless hours on this project. I still like old school...
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by curtistactical » Wed Feb 24, 2016 7:45 pm

Historian wrote:Cal50, please accept my admiration for your
master work. Having seen master Tool & Die Makers
starting as freshman over ½ century ago I especially
appreciate a Sensei of Stainless.


Oh to be able to turn my Atlas 618 into a CNC machine. :) :)

Best
Historian I started out with a 12x36 Atlas lathe. If you ever want to play with a cnc mill or lathe just stop by my shop and you can have all the fun you want.

On another note cal50, I can't help but take notice of the large flat at the mouth of the baffle. If this turn out to not be as quiet as you think it should be that would be my first suspect. I try to have no more than a .02" flat at the mouth of the bore on my baffles so the gas gets split down the taper of the cone, the larger the flat is the more horizontal jetting you will get and the cross port flow at the mouse hole will be less effective.
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Re: Form 1 / Omega baffle build .22 rifle can~

Post by Pat M » Sat Feb 27, 2016 9:13 pm

Very clean look, nice machining :D

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