We have become somewhat overwhelmed with the apparent popularity of the "Neck & Throat" service we offer. And are slightly late getting this info posted. While we are the originators of this service, there are others you are welcome to contact in regard to having this done.
In Canada you can either contact
www.xtremegunshootingcenter.com or
www.hical.ca and they can fix your SKS so it digests any and all ammo you feed it.
And for you folks in the Houston TX area, Marcus at
www.thesksmagadapter.com can help you, but only for drop by and wait for it to be done jobs, as he has no FFL.
And in New Mexico you can contact the guys at
www.bulldogfirearmsnm.comAnd our most recent addition is
www.tcsgunshop.comThe Custom Shop Gun Shop
3712 Main St, P.O. Box 410
Walworth NY 14568
315-986-1717
This is by far, the most beneficial service you can have done to your SKS, as it 100% stops "Popped Primers" from occurring and allows the use of any and all ammo available in the U.S. and Canada.