How many different caliber uppers are there?

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[ARCHIVED THREAD] - How many different caliber uppers are there?

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

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

5.56mm/.223
.22lr
.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.

Posted: 8/15/2004 3:37:29 PM EDT

[#1]

7.62x39mm
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.

Posted: 8/17/2004 1:50:45 PM EDT

[#2]

.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.

Posted: 8/17/2004 1:56:29 PM EDT

[#3]

50 A.E.
.40 S&W
10mm Auto

Posted: 8/17/2004 2:00:02 PM EDT

[#4]

.21 Genghis (aka 5.45x39mm)

Posted: 8/17/2004 2:31:08 PM EDT

[#5]

Hmm I get to do this every couple of years..

.17 Remington
.20 tactical
.204 Ruger
.22 LR
5.45x39 (.21 Ghengis).
.222
.222 Remington Magnum
.223
.223 WSM
.243
6mm PPC
6x45
6.5x45
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)
7.62x39
.30 Carbine
.300 Whisper/.30 Fireball
.32 ACP (IIRC only 1 made)
.357 AutoMag (no longer produced)
.338x39 (only 1 made)
.338 Whisper (#2)
9mm
.40 S&W
8mm Mauser (belt fed upper!)
10mm
.440 CORBON
.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.