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View Full Version : Who makes multi-caliber AR type lowers???


Marlin Hunter
05-25-2010, 6:29 PM
Who makes AR types lower receivers that can be registered multi-caliber?

Which ones are better, and why (if any are better than the others)?

I have internal parts that are about 30 years old and were from a Colt AR-15.

West545
05-25-2010, 6:31 PM
Spikes tactical makes multi cal

tomd1584
05-25-2010, 6:44 PM
First, the verbage "multi caliber" on a lower receiver means nothing. its strictly asthetics. You can have a 5.56 lower and attach a 6.5, 6.8, .22lr, 7.62x39 etc upper receiver.

Second, lower receivers aren't registered, unless you voluntarily do so; i'm not sure why you would.

Barabas
05-25-2010, 6:53 PM
Lauer's LCW series are marked multi, not that it matters.

jasonnorcal
05-25-2010, 6:58 PM
First, the verbage "multi caliber" on a lower receiver means nothing. its strictly asthetics. You can have a 5.56 lower and attach a 6.5, 6.8, .22lr, 7.62x39 etc upper receiver.

Second, lower receivers are registered, unless you voluntarily do so; i'm not sure why you would.

This :iagree:

Marlin Hunter
05-25-2010, 11:01 PM
First, the verbage "multi caliber" on a lower receiver means nothing. its strictly asthetics. You can have a 5.56 lower and attach a 6.5, 6.8, .22lr, 7.62x39 etc upper receiver.

Second, lower receivers aren't registered, unless you voluntarily do so; i'm not sure why you would.


I did not know that. :o I saw someone with a lower marked muli-caliber. They said they can use any upper with that receiver because the caliber wasn't stamped on the side. All the lowers I have seen said either .223 or 5.56mm. I know that the calibers are listed on federal and state forms for complete rifles. I did not know if they needed to put a caliber on the forms for blank lowers, but I figured they might need to put some caliber size on the forms.


So then, what is a good lower, or are they all the same?

Are there any lowers to stay away from?

L4D
05-25-2010, 11:06 PM
I heard this one is good...
http://stickman.rainierarms.com/galleries/Magpul%20II/IMG_9906%201028%20WEVO%20Stick.jpg

tomd1584
05-25-2010, 11:30 PM
I did not know that. :o I saw someone with a lower marked muli-caliber. They said they can use any upper with that receiver because the caliber wasn't stamped on the side. All the lowers I have seen said either .223 or 5.56mm. I know that the calibers are listed on federal and state forms for complete rifles. I did not know if they needed to put a caliber on the forms for blank lowers, but I figured they might need to put some caliber size on the forms.


So then, what is a good lower, or are they all the same?

Are there any lowers to stay away from?

No worries, thats what we're here for!:D

Other than Hesse/Vulcan/Blackthorne, you're pretty much GTG. pick one that has a rollmark/logo you like, that fits within your budget. You'll come to find out that there are only a few mfg's that make most of the lower receivers for everyone.
I personally have a CMMG, Kaiser defense, and working on getting an IAC (made by JD Machine, formerly Kaiser Defense).

Support a CA company and go with JD Machine!

-Tom

k1dude
05-25-2010, 11:36 PM
I have a Mega and a Calguns that say multi.

Q
05-25-2010, 11:37 PM
S&W

LAR

freonr22
05-26-2010, 12:00 AM
interchangeable mag wells??

http://www.mgi-military.com/image_upload/slider_AR_magwell.jpg




KwLeO-3vw-o

http://www.mgi-military.com/index.php?id=2&sub_id=24



http://www.calguns.net/calgunforum/showthread.php?t=240793

http://i634.photobucket.com/albums/uu65/mcad33/DSC02848.jpg

reidnez
05-26-2010, 12:28 AM
If a lower is in spec and intact, it's a good lower. Stay away from Hesse/Vulcan/Blackthorne and you're good to go.

Marlin Hunter
05-26-2010, 5:37 PM
interchangeable mag wells??

http://www.mgi-military.com/image_upload/slider_AR_magwell.jpg





I have seen those and really like them

I have also seen the price and didn't like that.

It will just be a single mag well for me for now.

Plisk
05-26-2010, 8:11 PM
(made by JD Machine, formerly Kaiser Defense).

Support a CA company and go with JD Machine!

Kaiser Defense still exists, they're off doing their thing in another state, Colorado I believe. But JD has been it's own company the whole time I believe and they recently split up due to something Kaiser was doing that JD didn't like.

Two lowers to stay away from are anything considered Tier 3 lowers, such as Roggio Arsenal. And stay away from FAB-10s. As Tom said, go with JD machine. They make Noveske's lowers, that's good stuff! And its supporting a CA business as Tom said, nothing wrong with that.