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9/19/2017 7:27:10 PM
Posted: 2/3/2006 4:50:02 PM EDT
My understanding is that of the newly manufactured lowers, only bushmaster will accept a RDIAS, because of having no block and the shelf height. Is that correct?

thanks
Link Posted: 2/3/2006 6:17:25 PM EDT
I think there are many others, not just Bushmaster. Colt is the only manufacturer that I know who adds a sear block. I know Mega, Lauer, LMT are all sear ready.

Not positive, but if it's billed as "mil-spec" I'm sure you can trust that it is DIAS-ready.
Link Posted: 2/3/2006 6:22:04 PM EDT
[Last Edit: 2/3/2006 6:22:23 PM EDT by Onslaught]
My RRA lower has "the shelf", so it wouldn't work either.
Link Posted: 2/3/2006 6:35:16 PM EDT
[Last Edit: 2/3/2006 6:36:10 PM EDT by theshootersden]

Originally Posted By Homeinvader:
I think there are many others, not just Bushmaster. Colt is the only manufacturer that I know who adds a sear block. I know Mega, Lauer, LMT are all sear ready.

Not positive, but if it's billed as "mil-spec" I'm sure you can trust that it is DIAS-ready.



The block that COLT has isn't the only thing you need to watch for... You need to look to see if it has a high or low shelf... A lot of manufacturers advertise their lowers as being mil-spec and it will have a high shelf...
Link Posted: 2/3/2006 6:39:04 PM EDT
"The block that COLT has isn't the only thing you need to watch for... You need to look to see if it has a high or low shelf too... A lot of manufacturers advertise their lowers as being mil-spec it will have a high shelf..."

That's what I am thinking about LMT/Lauer/PWA. I have LCW and PWA, both made by LMT, and they have a high shelf compared to my bushmaster.

Link Posted: 2/3/2006 6:43:07 PM EDT

Originally Posted By ktak56:
"The block that COLT has isn't the only thing you need to watch for... You need to look to see if it has a high or low shelf too... A lot of manufacturers advertise their lowers as being mil-spec it will have a high shelf..."

That's what I am thinking about LMT/Lauer/PWA. I have LCW and PWA, both made by LMT, and they have a high shelf compared to my bushmaster.




Thats the difference... When considering a RDIAS, low shelf good, high shelf bad...
Link Posted: 2/3/2006 6:49:15 PM EDT
I believe Ameetec lowers are also spec for RDIAS, but check with them to make sure.
Link Posted: 2/3/2006 7:20:01 PM EDT
LMT's are high shelf....
What about CMT or LRB receivers? Anybody know?
Link Posted: 2/3/2006 7:27:56 PM EDT
Pics of high shelf vs. low shelf??? I'm curious about this also...

TS
Link Posted: 2/3/2006 7:45:02 PM EDT

Originally Posted By TigerStripe:
Pics of high shelf vs. low shelf??? I'm curious about this also...

TS


I would, but I can't get to the safe for the sleeping folks...

BUT I can offer this... An upper with a LOW shelf can use an "accu-wedge", an upper with a HIGH shelf cannot. There is not enough room between the "shelf" and the upper's rear pivot post to close the upper to the lower.
Link Posted: 2/3/2006 7:46:25 PM EDT
Gotcha. I can check quite easily then, thanks!!!

TS
Link Posted: 2/3/2006 7:54:14 PM EDT
Bushmaster is the only one I have seen in person thats a Low Shelf. All the other brands I have seen are high or blocked in various ways.
Link Posted: 2/3/2006 8:07:14 PM EDT
[Last Edit: 2/3/2006 8:08:36 PM EDT by Onslaught]
Ah heck with it... The wife sleeps like a brick anyways.

I tried to take several pictures, but the difference is SO subtle, I couldn't tell which was which in the pictures, SO I went with my own suggestion, threw in an accu-wedge, and it was obvious.



Bushmaster lower on the left, Rock River Arms lower on the right.

Hope this helps!
Link Posted: 2/3/2006 9:54:36 PM EDT
LAR is good to go. FAR too IIRC.
Link Posted: 2/3/2006 11:04:03 PM EDT
For my RDIAS, I've got a LAR, POF, and AR47. All of which are low shelf.

The ultimate lower for a RDIAS has to be the new MGI lower for obvious reasons. Unfortunately, it is high shelf. I've had mine milled out.

Below is a pic of mine.

Link Posted: 2/4/2006 2:06:06 AM EDT
I just read on CMMG's website, that theirs are low shelf. It'd be nice to compile a list.

So far we have:

Bushmaster
CMMG
POF
LAR
<­BR>
Anyone know for sure on others like Fulton, Superior, etc.?

I guess it really doesn't matter if you're not looking at a RDIAs...but I am, so I'm interested in finding out.

thanks

Link Posted: 2/4/2006 3:20:47 AM EDT
I wonder if POF and DSA are the same...

TS
Link Posted: 2/4/2006 3:29:30 AM EDT
Olympic Arms are low shelf also.
Link Posted: 2/4/2006 3:56:09 AM EDT

Originally Posted By neverenuf:
Olympic Arms are low shelf also.



Also LOW QUALITY!
Link Posted: 2/4/2006 3:57:27 AM EDT

Originally Posted By amphibian:

The ultimate lower for a RDIAS has to be the new MGI lower for obvious reasons. Unfortunately, it is high shelf. I've had mine milled out.




WHAT IN THE HELL IS THAT???
Link Posted: 2/4/2006 6:08:25 AM EDT

Originally Posted By markm:

Originally Posted By amphibian:

The ultimate lower for a RDIAS has to be the new MGI lower for obvious reasons. Unfortunately, it is high shelf. I've had mine milled out.

www.c3junkie.com/m16/MGI/lower.jpg



WHAT IN THE HELL IS THAT???




mgi's modular lower with replaceable/changable mag wells to accept a wide variety of calibers.
Link Posted: 2/4/2006 6:09:17 AM EDT
bushmaster
ameetec
dpms

are all lowers that i know are low shelf

cmt products are high shelf.
Link Posted: 2/4/2006 6:15:51 AM EDT

Originally Posted By eklikwhoa:

mgi's modular lower with replaceable/changable mag wells to accept a wide variety of calibers.



That's crazy! I thought it was a photoshop or a destroyed receiver.
Link Posted: 2/4/2006 6:23:46 AM EDT
Anyone have a link to this MGI thing? Sounds interesting.
Link Posted: 2/4/2006 7:50:58 AM EDT
[Last Edit: 2/4/2006 7:51:25 AM EDT by General_Tso]
Link Posted: 2/4/2006 8:02:34 AM EDT
[Last Edit: 2/4/2006 8:11:23 AM EDT by JustinOK34]

Originally Posted By Onslaught:
Ah heck with it... The wife sleeps like a brick anyways.

I tried to take several pictures, but the difference is SO subtle, I couldn't tell which was which in the pictures, SO I went with my own suggestion, threw in an accu-wedge, and it was obvious.



Bushmaster lower on the left, Rock River Arms lower on the right.

Hope this helps!



It looks like the high shelf is flush with the top of the selector switch, and on the low shelf it looks like half of the selector switch is above the shelf. Would you agree?

Edit - Just checked two of mine. Bushmaster is visibly lower, and PWA is a high shelf.

The shelf isn't quite halfway through the selector switch on the low shelf.
Link Posted: 2/4/2006 2:54:46 PM EDT
[Last Edit: 2/4/2006 4:50:21 PM EDT by ktak56]
Add Superior Arms to the low shelf list....and a damn nice looking lower as far as quality goes. It'll probably be my next lower
Link Posted: 2/6/2006 9:31:05 PM EDT
my 2 preban eagle arms EA-15 are as follows:

ser. no 13xxx is low shelf

ser. no 20xxx is high shelf
Link Posted: 2/6/2006 10:25:04 PM EDT
MEGA is low shelf.
Link Posted: 2/6/2006 11:00:42 PM EDT

Originally Posted By markm:

Originally Posted By eklikwhoa:

mgi's modular lower with replaceable/changable mag wells to accept a wide variety of calibers.



That's crazy! I thought it was a photoshop or a destroyed receiver.



Since markm has clearly been rattled I'll have to step in here:
IT SHOULD BE BANNED FROM CIVILIAN USE!!!!!!!!!

Cheers
Link Posted: 2/7/2006 3:49:53 AM EDT

Originally Posted By eklikwhoa:
bushmaster ("L" series)
ameetec
dpms

are all lowers that I know are low shelf



That's because all of those are milled by LAR. LAR also makes Grizzley lowers and they also have the low shelf.

All CMT and LMT made lowers that I've seen or heard about have the high shelf.
Link Posted: 2/7/2006 4:39:39 AM EDT

Originally Posted By Moe-Ron:

Since markm has clearly been rattled I'll have to step in here:
IT SHOULD BE BANNED FROM CIVILIAN USE!!!!!!!!!

Cheers



That goes without SAY!!!
Link Posted: 2/7/2006 6:15:14 AM EDT
RDIAS works great in my Oly
Link Posted: 2/7/2006 9:46:27 AM EDT

Originally Posted By markm:

Originally Posted By Moe-Ron:

Since markm has clearly been rattled I'll have to step in here:
IT SHOULD BE BANNED FROM CIVILIAN USE!!!!!!!!!

Cheers



That goes without SAY!!!



Rattled or not, I bet even you would have to agree that, that modular lower is SWEET.
Link Posted: 2/7/2006 1:26:32 PM EDT
Now I know I wasn't crazy trying to fit an accuwedge into my RRA lower. Go figure, it fit into a Colt with the big ass block in it?!

Seems to me, everybody should be making low shelf lowers.
Link Posted: 2/7/2006 3:26:54 PM EDT

Originally Posted By NRA2:
Seems to me, everybody should be making low shelf lowers.



Yup!

TS
Link Posted: 2/10/2006 3:11:14 PM EDT
Is this an exhaustive list???


Bump!



TS
Link Posted: 2/10/2006 5:22:09 PM EDT

Originally Posted By markm:

Originally Posted By neverenuf:
Olympic Arms are low shelf also.



Also LOW QUALITY!



w00t!
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