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Posted: 10/17/2008 2:17:17 PM EDT
For starters, I already have a Colt 6920 and a Krebs AK that are my dedicated 5.56 and 7.62 shooters, respectively.  My next project is building up a top-quality stripped lower for swapping other-calibers uppers such as .50 Beowulf, 6.8, etc.

(1) Do I need a Multi lower such as Stag, MEGA or POF Billet, or will a Noveske 5.56 lower function just as well for these >5.56 calibers?

(2) Are there any legal issues (particularly federal) if using a non-5.56 upper with a 5.56 lower?  (The reason I ask this is that a salesperson seemed to think there was.)

(3) Do Multi lowers use the same LPK and trigger groups as the 5.56 lowers, if I go the Multi lower route?

Thank you in advance for your responses.
Link Posted: 10/17/2008 2:26:43 PM EDT
[Last Edit: 10/17/2008 3:00:12 PM EDT by sd_norske]

Originally Posted By NeverThinkForfeiture:
(1) Do I need a Multi lower such as Stag, MEGA or POF Billet, or will a Noveske 5.56 lower function just as well for these >5.56 calibers?


No, aside from the rollmark they are the same.  


(2) Are there any legal issues (particularly federal) if using a non-5.56 upper with a 5.56 lower?  (The reason I ask this is that a salesperson seemed to think there was.)


No, your 5.56 lower is fine.


(3) Do Multi lowers use the same LPK and trigger groups as the 5.56 lowers, if I go the Multi lower route?


Yes, same lower receiver dimensions, same LPK.




ETA - Welcome to the boards.



Link Posted: 10/17/2008 2:29:16 PM EDT
If you are doing a top quality lower build I recommend the slr15 lower.  There is a group buy on until the end of the month.  
Link Posted: 10/17/2008 2:29:22 PM EDT
[Last Edit: 10/17/2008 2:29:43 PM EDT by GeorgiaBII]

Originally Posted By NeverThinkForfeiture:


Interesting screen name...


Welcome! And see 2 above for all your answers. He's got them exactly right.
Link Posted: 10/17/2008 6:00:13 PM EDT
[Last Edit: 10/18/2008 2:16:06 PM EDT by NeverThinkForfeiture]
Thanks for the replies, everyone.  Noveske N4 stripped lower en route.
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