Multi-Caliber Reciever? for AR?

[wacki]

Found these two receivers:

AP15 Aero Precision AP15 AR15 Multi Caliber Lower Receiver
http://www.aimsurplus.com/acatalog/Aero_Precision_AP15_Multi_Caliber_Lower_Receiver.html

CMMG-L001 CMMG MOD4SA AR15 .223/5.56x45 Lower Receiver
http://www.aimsurplus.com/acatalog/AR_CMMG_MOD4SA_AR15_.223_5.56x45_Lower_Receiver.html

Maybe I'm being a nit but why the "multi-caliber" name? Is there a difference? I'm guessing no but I've been surprised before.

 

[H2O MAN]

+1


I just picked up a POF P-415 receiver with
CALIBER: MULTI stamped into the receiver.

What's up with that?

 

[jerkface11]

It doesn't matter. Some companies mark theirs .223 others 5.56 some even put 5.56x45 or 5.56Nato. I've even seen 6.8 SPC markings. However all of those lowers are the same.

 

[HorseSoldier]

Doesn't mean anything, like jerkface11 said. All AR lower receivers are multi-caliber, as long as the caliber in question will fit through the AR magwell. Marking them "multi" or in a caliber other than 5.56 doesn't mean anything special.

 

[Tacbandit]

For anyone who wants to have a "multi cal" stamped receiver, here's a link to a company does such creative work...You can customize it, and pick your own serial #. I suppose this might be handy in the future, with any possible legislation on those "evil black rifles"...such as swapping uppers, for a different caliber, other than what was originally marked. Anyway, for whatever it's worth....He was making lowers in .308, and lowers in .223/5.56
www.centermasstactical.net/

 

[Gord]

I've never been a fan of the "multi" stuff (especially when it's stamped in some goofy font - c'mon) but Aero Precision has top-notch machining, just FYI. I'm going to be picking one up from my local shop soon.

 

[gvnwst]

Multi is just for people who actually don't ahve their collection memorized, and look at the caliber on the lower. Mulit being there just tells them to look somewhere else.