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-   -   5.56 - .22LR upper swap? (http://www.firearmstalk.com/forums/f20/5-56-22lr-upper-swap-74000/)

kjbcruz12 10-09-2012 04:04 AM

5.56 - .22LR upper swap?
 
I'm still learning about AR's and I was wondering when I get one (a 5.56), can I swap out the upper to a .22LR upper from the 5.56 and will it work? Would I need to change/swap anything else out besides the upper?

c3shooter 10-09-2012 09:53 AM

A standard lower can have a .22 upper added- will need a different magazine. MOST 22 LR lowers cannot have a 5.56 upper. There is a size difference (width) and .22 LR has no buffer, different bolt setup, etc.

KingTiger 10-09-2012 02:55 PM

Some .22 upper manufacturers (CMMG, Spikes) recommend a rounded hammer vs a notched one. That swap shouldn't effect 5.56 functioning.

slog 10-10-2012 03:46 AM

You can get one of the drop-in kits.

http://www.brownells.com/.aspx/pid=27008/Product/CMMG-AR-15-22-LR-CONVERSION-KIT

Be aware shooting lead .22 fouling will clog the gas tube.


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