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12/22/2025 2:35:20 PM EDT
[Last Edit: MoNkEyTurbo][Edited]
With the 0$ tax day approaching I had planned to make a list of all of the possible combinations of silencers I would ever want and then submitting a Form 1 to have on hand for whenever I might get around to make it.
(My 9 month old made that free time disappear, so here we are).

My list would include the most commonly sized form 1 silencers, such as B cell, D cell, etc. with some appropriate info on caliber, dimensions, thread specs, etc.

More importantly I wanted to list integral or historical examples where silencers were integrated or used historically. Such as the Delisle carbine, Welrod, MP5-SD, other type of clandestine type firearms. As I would like to produce my own copy of these in the future.

I hope this would help others and act as a repository for information, please add what you think is valuable and if this goes somewhere I will update the post.

Found this information useful;
https://www.cole-tac.com/wp-content/uploads/2022/07/Common-Suppressor-Sizes-Sheet1.pdf





12/23/2025 1:18:36 PM EDT
[#1]
For a Form 1 all you specify is caliber & length. If you make all your submittals .22 you can bore the can to anything over that.  It is however nice to mark the cartridge limits a home brew is intended for but you can engrave additional info later (like “rated up to cal. XXX”).  

So you could cover a range with .22 submittals from 5” to 16” in inch increments. After building any refinements you can submit a description update letter.

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