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Posted: 8/15/2004 3:21:55 PM EDT

I know of the obvious ones of course, can anyone else add any more?

.45 ACP
9mm Parabellum
6.8mm SPC
6.5 Grendel
.300 Whisper
.300 Fireball (IIRC)
.50 Beowulf
.499 LEI
.50 BMG

Any others? Mind you, I am talking about calibers that will work on most standard lowers - not AR-10s or anything like that. Thanks.

Link Posted: 8/15/2004 3:37:29 PM EDT
[Last Edit: 8/15/2004 3:43:28 PM EDT by J-A-R]
6mmx45mm or 6mm/223
222 remington
204 ruger
17 remington

probably a lot more with differant wildcats that will fit the magazine and bolt face.
Link Posted: 8/17/2004 1:50:45 PM EDT
.458 SOCOM?
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.
Link Posted: 8/17/2004 1:56:29 PM EDT
50 A.E.
.40 S&W
10mm Auto
Link Posted: 8/17/2004 2:00:02 PM EDT
.21 Genghis (aka 5.45x39mm)
Link Posted: 8/17/2004 2:31:08 PM EDT
[Last Edit: 8/17/2004 2:32:22 PM EDT by Forest]
Hmm I get to do this every couple of years..

.17 Remington
.20 tactical
.204 Ruger
.22 LR
5.45x39 (.21 Ghengis).
.222 Remington Magnum
.223 WSM
6mm PPC
6.5 PPC
6.5 Whisper
6.5mm Grendle
6.8 SPC
7mm TCU
7mm Whisper
7.62x25 (IIRC its under R&D right now)
.30 Carbine
.300 Whisper/.30 Fireball
.32 ACP (IIRC only 1 made)
.357 AutoMag (no longer produced)
.338x39 (only 1 made)
.338 Whisper (#2)
.40 S&W
8mm Mauser (belt fed upper!)
.44 AutoMag (no longer produced)
.45 ACP
.499 L&W
.50 AE
.50 Beawulf
.458 SOCOM
.475 Tremor
.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.

Link Posted: 8/17/2004 2:47:24 PM EDT

Originally Posted By AvengeR15:
How many different caliber uppers are there?

Link Posted: 8/17/2004 4:22:07 PM EDT

Forest, do you know who is working on the 7.62x25mm upper? That might be something I am interested in. Thanks.

Link Posted: 8/18/2004 6:54:16 AM EDT
I think it was Kurt who was working on one for a customer. Check his website there might be photos.
Link Posted: 8/18/2004 6:41:42 PM EDT

Originally Posted By AvengeR15:
Forest, do you know who is working on the 7.62x25mm upper? That might be something I am interested in. Thanks.

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

Link Posted: 9/7/2004 8:20:39 PM EDT
Where or who sells the .40 s&w AR uppers and what brand are they.
Link Posted: 9/8/2004 6:42:54 AM EDT
Link Posted: 9/8/2004 7:05:04 AM EDT
.243 WSSM
Link Posted: 9/8/2004 7:07:45 AM EDT
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.
Link Posted: 9/8/2004 12:25:53 PM EDT
I wish there was such thing as a .44 MAG AR upper.
Link Posted: 9/8/2004 12:38:54 PM EDT
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.
Link Posted: 9/8/2004 1:03:41 PM EDT
Not trying to Hi-jack the thread.. but who can point me in the direction of 45 ACP conversions for the AR?



Link Posted: 9/8/2004 1:47:36 PM EDT
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.
Link Posted: 9/9/2004 6:52:12 AM EDT

Originally Posted By Capro:
I wish there was such thing as a .44 MAG AR upper.

There used to be...
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