I'm going to be filling out paperwork for a TPM 12" SD silencer tomorrow, and using the SilencerShop kiosk to SBR the host gun that the TPM can is going to be used on. It's an Omega SD, from Atlantic Firearms. I was curious if anyone had SBRed one of these, and what they listed for overall length, since it was purchased as a barreled receiver, with a 5.75" ported barrel, no suppressor, and no stock or arm brace, all of which will affect the length. My Omega SD now has an arm brace (only until the stamp comes in). Should I measure the OAL with the Arm brace and suppressor installed? What do you folks think?

I appreciate your insights,

Mike Smith/AAC
SilentMike

No but tag for outcome, thought about the same project many times.

Thanks BigWaylon.

The arm brace is actually a folder, very similar to the B&T folder for the MP-5. Should I measure it with the stock/arm brace folded closed or open? Also, should I measure it with the integral silencer installed? You really can't shoot one of these without the can.

Thanks again,

Mike

Copy that.

Thanks BigWaylon!

Mike

I'd just use HK's specs for the MP5SD and be done with it.