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3/20/2017 5:03:23 PM
Posted: 12/10/2001 9:46:59 PM EDT
How can I tell if my DPMS lower is stainless, carbon, or aluminum?

It's parkerized, and a magnet won't stick to it? Any help would be appreciated?
Link Posted: 12/10/2001 9:57:09 PM EDT
Stainless, and aluminum are both non-magnetic...
Stainless is MUCH, MUCH heavier than aluminum...

If you had a stainless receiver, you wouldn't have any difficulty feeling the difference...

Chances are, it's forged aluminum...
Link Posted: 12/10/2001 10:00:37 PM EDT
Well, it looks like there are casting lines running down the middle of the receiver. How can I tell for sure?

I haven't handled AR's enough to know for sure what the weight difference would be.

Thanks for your help.
Link Posted: 12/10/2001 10:25:02 PM EDT

Originally Posted By amstel78:
Well, it looks like there are casting lines running down the middle of the receiver. How can I tell for sure?

I haven't handled AR's enough to know for sure what the weight difference would be.

Thanks for your help.



ANY casting lines, means it's Aluminum...

Stainless is machined from a block of solid metal, leaving NO casting/forging marks...

Carbon Fiber looks just like plastic, but DPMS doesn't offer anything in Carbon Fiber...

99.99% of the AR's out there are Aluminum...
Link Posted: 12/10/2001 10:27:28 PM EDT
Thanks for your help... I meant carbon steel, not fibre though. Thanks anyway!
Link Posted: 12/10/2001 10:30:55 PM EDT
i have one and at it would say this on it:
SN 9999S the last S for stainless. they are also much heavier than normal lowers.
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