556 or 223 ar15 or arp w/ grey market research super safety

-Local only, cash or trade.

-Close to Cardinals Stadium or Desert Diamond Casino.

-Grey Market Research super safety,

-Chambered in 5.56 or .223

-Operates in semi with no issues and will work in bursts with ss, but will need a heavier buffer for correct operation(have one ordered but will sell before it arrives.).

-can send video of operation. 

-m&p15 lower, BCA 7.5" side charging upper.

-Kak Industries pistol blade brace.

-Vortex Crossfire red dot and 45 degree backup iron sights.

- Upgraded Titanium firing pin and fire control group spring kit.

-2 Magpul 30rd magazines.

This was a build I planned to keep for in house protection but ended up going a different route. The SS functioned perfectly with a 16" upper but is having a reset issue with the shorter barrel that can be fixed with an H3 which i have ordered and should be in, Ill update the post as soon as it arrives. Any questions or offers are welcomed.