I have an unused Ruger 10/22 SBX barrel, decided not to go the suppressor route. Barrel lets you install any common .22lr sound suppressor without making your 10/22 barrel longer. Requires use of bull-barrel stock. It's new, and as described here: http://www.hawktecharms.com/Tactical-Solutions-10-22-Lightweight-Barrel-p/ts-b10sbx.htm
"Tactical Solutions’ X-Ring SB-X barrel is a precision machined, lightweight barrel upgrade designed to easily fit the popular 10/22® without gunsmithing .The SB-X shortens the overall barrel length, giving the shooter the advantage of an SBR without the paperwork. X-Ring SB-X barrels have a bore length of 12.25” but an overall length of 16.5” due to the permanently attached shroud to house your suppressor.
Machined from 6061-T6 billet aluminum, this .920 diameter barrel is essential for the serious shooter who demands accuracy. For a custom fit, the X-Ring SB-X barrel has an oversized shank to fit a vast array of 10/22® receivers. A 1 in 16” twist chrome moly button rifled barrel makes this an accurate and reliable choice for the 10/22® shooter."
Asking $230 shipped Priority in the lower 48. All federal regs apply, do not buy if you can't legally own it, etc. Email is faster than PM if you have any questions, I'll accept money order, cert. check, or paypal +3%.
Edit - Sold