I know of the obvious ones of course, can anyone else add any more?
.300 Fireball (IIRC)
Any others? Mind you, I am talking about calibers that will work on most standard lowers - not AR-10s or anything like that. Thanks.
6mmx45mm or 6mm/223
probably a lot more with differant wildcats that will fit the magazine and bolt face.
The other .20 -- .20 Tactical or something like that.
.223 WSM or WSSM (Saw an Oly in that caliber recently.)
Oly makes uppers in 10mm & .40S&W too.
Just saw a .17Aguila conversion in the rimfire & pistol forum.
Somebody has probably done a .22WMR or .17HMR conversion by now.
I think somebody used to make .357 & .44 magnum uppers. Maybe .41 magnum too.
.21 Genghis (aka 5.45x39mm)
Hmm I get to do this every couple of years..
5.45x39 (.21 Ghengis).
.222 Remington Magnum
7.62x25 (IIRC its under R&D right now)
.300 Whisper/.30 Fireball
.32 ACP (IIRC only 1 made)
.357 AutoMag (no longer produced)
.338x39 (only 1 made)
.338 Whisper (#2)
8mm Mauser (belt fed upper!)
.44 AutoMag (no longer produced)
.50 SOCOM (very limited)
.58 Blackpowder (IIRC 1 was made)
.50 BMG (single shot & magazine fed)
Most of these are currenlty offered - some were custom projects.
Forest, do you know who is working on the 7.62x25mm upper? That might be something I am interested in. Thanks.
I think it was Kurt who was working on one for a customer. Check his website there might be photos.
Had three already leave the shop, working on two more barrels. Leaving it up to the customers to figure out the mag ... Cav Arms II lower with CZ24/26 mags works.
Check in the pistol caliber forum, post by Corvus
Where or who sells the .40 s&w AR uppers and what brand are they.
With the end of the Federal AWB, and the CA ban excepting rimfire, I would expect some serious wildcat rimfire cartridges to come out soon.
I wish there was such thing as a .44 MAG AR upper.
There used to be. I think it was Tromix that made it, but I'm not sure if they still do. Used Desert Eagle magazines IIRC.
Try the Rimfire and Pistol Caliber forum. There have been several .45ACP guns on there recently. Oly Arms mentions .45 ACP on the page I linked to earlier too.
There used to be...