ATRS Modern Sporter FA weights?

Lower (serial pre 000100): 290g w/ rear cross pin installed.
Lower (serial post 000100): 286g w/ rear cross pin installed.
SS upper (enlarged ejection port): 266g w/ shell deflector installed.
FA upper (standard ejection port): 258g w/ nothing installed.

*scale reads in 2g increments, so there is some margin of error. Weighed each item 5 times, went with the reading that appeared the majority of times.
 
Lower (serial pre 000100): 290g w/ rear cross pin installed.
Lower (serial post 000100): 286g w/ rear cross pin installed.
SS upper (enlarged ejection port): 266g w/ shell deflector installed.
FA upper (standard ejection port): 258g w/ nothing installed.

*scale reads in 2g increments, so there is some margin of error. Weighed each item 5 times, went with the reading that appeared the majority of times.

Thanks!

Now I'm even more stoked. These way less than I predicted. I have everything for my build except the upper/lower.
 
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