The A3 upper receiver assembly is made to mil-spec standards and includes a picatinny rail on the top, dust cover, and installed forward assist. Specifications for Stag Arms AR-15 A3 Flattop Upper Receiver: Manufacturer: Stag Arms Gun Make: AR Platform Gun Model: AR-15 Condition: New Features of Stag Arms 15 A3 Upper Receiver Assembly: Pivot/Takedown Pin Size: Small pin – .250″ Material: Forged and mil-spec with type 3 hard coat anodizing and a picatinny rail on top Package Contents: Stag Arms AR-15 A3 Flattop Upper Receiver
6 reviews for Stag Arms AR-15 A3 Flattop Upper Receiver
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Simonsay629 –
Arrived on my front door step on National Left Hand Day. Today!!! Coincidence? Cant wait to put this together and test. Finally. No more burnt biceps. Looks like well built, good quality. Fast shipping.
Max –
My first experience with Stag. The upper is well made and no complaints. I do see that I will have to modify/shorten the ejection port cover rod to make the upper work with a rail that has anti-rotation that extends on the upper’s sides. Other than that, I wish Stag would contract Radian to make some “left-hand” charging handles putting the larger lever on the left side.
Bryan Verduzco –
this is my second stag left handed upper that I have purchased. Both have been well made and high quality, this one is no exception. I was able to put my rifle together with no issues and this thing is holding up just fine.
Spyder –
So far so good. Shot a few rounds with zero issues. Using an Aero Precision lower, Toolcraft BCG, Ballistic Advantage barrel with no problem. Looking forward to getting another really soon.
Yo Payly –
This Stag is a God send. Im ambidextrous in my shootings abilities, but faver my left side hold. This keeps the blowback out of my face while using my Suppressors. Keep up the good work, both Stag AND Optics Planet.Thanks, Polly
Olowrin –
I'm left handed. If you buy this, you will need to also have left handed everything. The BCG must be a left handed one (only made by Stag). The free-float rail also will not fit this since the ejection port opens from the top. I couldn't get it to fit into a vice block either