Quoted:
Does anyone have any experiences with retro clones Troy is putting out, like the XM177E2 or the GAU-5?
Thanks.

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I bought an XM177-E2 clone a couple months ago.  I like the way it looks and shoots (1/2" groups at 50 yards), but the front sight base was canted to port.

I stewed about it for awhile and decided to send the upper back to Troy.  They sent me a new upper, and the replacement upper's front sight base is canted about the same to starboard - disappointing.  The finish doesn't match my lower now either, but it's close.

<a href="http://s142.photobucket.com/user/allanedavis/media/Troy%20XM177E2%20after%20trip%20back%20to%20Troy%20-%20front%20sight%20canted%20the%20other%20way_zpscehjzfiz.jpg.html" target="_blank">http://i142.photobucket.com/albums/r101/allanedavis/Troy%20XM177E2%20after%20trip%20back%20to%20Troy%20-%20front%20sight%20canted%20the%20other%20way_zpscehjzfiz.jpg</a>

It's functional, but I even though this I bought this rifle mostly to look at, I expect it to be assembled correctly.  While it functions fine and is zero'ed, having the rear sight adjusted almost to the limit does not present a natural sight picture when shouldering the rifle.  I guess I could give Troy another chance to fix it (again), but I'm not confident they will get it right the third time.

Quoted:
That's totally un acceptable from a firearms manufacturer. Esp since this is the second upper. I would demand a refund and build your own. You will be much happier with the finished product.