Re: Rimfire Upper Question
Speed costs. How fast do you want to go?
The major choices for a Service Rifle upper include Ballistic Advantage, which uses Spike's Tactical's Atchisson bolt and Ciener compatible mags from Ciener, Black Dog Machine, or CMMG.
BA does several types of retro uppers, too. Barrels are about $250 if you're doing your own build.
M1S barrels may be available separately. If you are somewhere they're doing a gunshow, sometimes they'll bring stuff at request, but their builds are 8-12 weeks behind per recent e-mail and personal communication at the Fort Worth gun show last week. I have no idea how their 20" SR barrel shoots.They had bull and CAR uppers on the table. My 16"HB CAR shoots about 5/8" @ 50yd.
Compass Lake Engineering does Service Rifle and Space Gun upper (20")with premium Douglas barrels. Complete uppers are $1100, free float and all, use the M-261 bolt, and include 3 mag inserts and a single loading tool(M-261 can lock open on a USGI mag). Barrels $300+ $240 bolt and mag inserts. Extra charge for custom lengths like my 18"SPR. So far groups 3/8-9/16"@ 50yd. Wants to shoot one hole, but I carefully restrain such exuberance. Frank White's match uppers have flats milled on the barrel for setscrews instead of taper pins for the FSB so you can time the front sight to get the rear sight in the middle of its range. About 8 weeks, great folks to deal with.
Accuracy Speaks does barrels and uppers in match configuration on whatever .22 bolt you want to use, about $1100. Hey, you WILL save on ammo.
