Best forged lefty upper on the market - Stag Arms AR-15 A3 Flattop Upper Receiver

I have four of these. The fit and finish is perfect. The machining and measurements are very precise with no wiggle on multiple different lowers. The 7075 aluminum is much tougher than other 6061 slick side uppers on the market made by KAK, KMT, WMD guns, DeltaTT, Davidson and the only other comparable 7075 lefty upper is made by PSA which is $30 more expensive and machining not as precise. Don’t spend the extra money to get a left handed proprietary parts kit from stag, upper parts are universal. There are plenty of options for quality ambi lowers my favorite so far is the Blem raw ambi lowers from ZRO delta for $40 when they’re in stock. There are tons of left handed BCG options on the market but my go to is the KAK chrome lined carrier paired with any of their bolts. Those things are tanks and the best bang for your buck anywhere. Trust me I’ve done a ton of research. I have 2 LH Toolcraft Nib BCGs and KAKs are better IMO and the chrome lined carrier lasts forever. Can’t go wrong with this upper it’s perfect. Just buy one and you’ll keep coming back. Don’t try to find them anywhere else, I’ve tried idk how OP keeps getting them in stock but no one else does and I’m not complaining. I currently have another one on order…happy building!