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.
Okay, so I have my Form 1 approved, and the goal is to build a forever rimfire can that can handle most calibers and full auto 22LR. I settled on Ti for the tube, spacers, and valve spring retainers for baffles. I bought a Griffin Checkmate 3 lug mount, and I'll be making a SS end cap. Let me know what you think and provide any suggestions, as this will be my first can...
My design was done in Excel, so the detail of the VSRs is not accurate but it is pretty much to scale...
And here are the parts I have so far. Still searching friends for a scrap piece of 1" Dia. SS rod...
I'm doing this because I'm tired of waiting for my outstanding Form 4s to be approved, and I may file a couple of more before the end of the year for 9MM and a 7.62 just because...
The addition of simple porting of the valve spring retainers may work the high velocity gas harder for better performance along with a few more baffles.I am always amazed at the inventiveness of many form one builders.
The only reason after 243 years the government now wants to disarm you is they intend to do something you would shoot them for!
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=79895
Thanks Capt. I've thought about that and decided to wait to see how it performs. I'm concerned whether or not I should move the 0.300 spacer from the front and add that length between the first and second baffles. Your thoughts?
Take a look at some of the posts on clipped cones, this is what you want to do to your baffles to create some turbulence inside the can. If you just leave them round with nothing to get the gas moving in different directions it wont be all that quiet. This is a very vague explanation so if you don't find what you are looking for in any of the threads let me know and I'll give some ideas of clipping or porting I will just need a better view of the baffle to really tell you exactly what type of porting / clipping to do.
daviscustom wrote:How thick are your spring retainers at the bore? Are they just stamped sheet metal, or do you have some substantial thickness to work with?
The thickness shown in the picture is accurate. These are machined from titanium bar stock, definitely not stamped. They are used in high-performance racing engines...
ETA: In case I misunderstood the question, the retainers are .312 thick with a diameter of .885 inches...
daviscustom wrote:How thick are your spring retainers at the bore? Are they just stamped sheet metal, or do you have some substantial thickness to work with?
The thickness shown in the picture is accurate. These are machined from titanium bar stock, definitely not stamped. They are used in high-performance racing engines...
ETA: In case I misunderstood the question, the retainers are .312 thick with an outside diameter of .885 inches...
Ok, you should be able to port those on the front and back, much like scooped ports/cross jets on the face of a K-baffle to divert gas off the bore-line.
The myopic majority will be our republic's undoing.
...also if you could find spacer tubing that would fit the base diameter of the little cone on face of the VSR (do away with your outer spacers), you could use your spacers to create something like an omega baffle with a coaxial chamber to port into.
The myopic majority will be our republic's undoing.
How big is the hole ID in the middle of the retainers? I think that is what the other persons were asking. The ones I got were all .410" which would big for 22lr, but I see yours are for 6mm stems so they would probably be smaller.
Last edited by c5_nc on Sat Oct 25, 2014 8:32 am, edited 1 time in total.
c5_nc wrote:How big is the hole ID in the middle of the retainers? The ones I got were all .410" which would big for 22lr
REALLY big
In my case the right size for 9mm/300blk, I see the part number he posted was for a 6mm stem so probably smaller, most retainers are multi now and the valve locks that fit them are made for different stem sizes.
daviscustom wrote:Ok, you should be able to port those on the front and back, much like scooped ports/cross jets on the face of a K-baffle to divert gas off the bore-line.
I was thinking about porting the "cone" similar to the Spectre II design (the inspiration for this build), but I'm concerned about poi shift after reassembly because there is nothing that will allow consistent alignment in this design...
c5_nc wrote:How big is the hole ID in the middle of the retainers? I think that is what the other persons were asking. The ones I got were all .410" which would big for 22lr, but I see yours are for 6mm stems so they would probably be smaller.
