will this fit on an ar15 pistol marked lower?

[yongxingfreesty]

http://gunbroker.com/Auction/ViewItem.asp?Item=103017716

just wondering, want to buy a pistol marked lower and have this as my 9mm upper. think it will work?

 

[MisterPX]

Yes, that would have worked.

 

[yongxingfreesty]

aww damn, already sold.