Anderson Manufacturing AR-15 Upper Receiver Assembly

Great upper receiver, NOT T-marked. Fit is excellent with an Anderson lower. Will buy again.

Had the item in a few days and it was in excellent condition when received. I will do business with Primary Arms again, soon!

I bought this month ago and waited to have the rifle completed before I wrote a review. Finally! Shot it today and it paired well with my anderson 80%. Can't complain shooting 2" groups at 60yrds. Fast shipping:)

I couldn't find the Anderson upper for my blackout build anywhere on the Internet or in stores for anywhere near this price. It fits my Anderson lower like a glove (of course) and I will purchase my future build parts right here as well.

I don't get spending a lot of money on a receiver. This one looks great, feels great, the fit is great. 100% functionality, brass deflector, assembled dusts cover and forward assist... What else could you pay more for. Great buy, would buy again.

I had already bought an Anderson lower, several months earlier, from another store. The two receivers matched perfectly in fit and color. No defects whatsoever. The forward assist is smooth and firm. The ejection door hardware functions perfectly. Zero complaints. I absolutely, 100% recommend.

I had been having great difficulty locating an upper to complete a 5.56 build.Everyone in my area was $129 and up for an AR Upper with port cover and F/A installed...Primary Arms to the rescue with their Anderson Upper at a Knockout price! I had the upper completed, and was at my local range within 2hrs of delivery, and it's working great...Thanks Primary Arms for saving the day as well as saving money on the build!

I had hopes for this upper since it was advertised as "MILSPEC". Unfortunately it is not MILSPEC. The upper does not have T-markings, the M4 feed ramps are rather weak and it did not have the dry film lubricant applied inside. Overall it will be functional, but it's not MILSPEC.

I have been looking for uppers for my AR 300 blackout build, Anderson had great reviews. I will buy another one for my next 308 build.

I have built 4 uppers now Anderson receivers and all have been perfect. I square all my uppers with a lapping tool and these are already almost perfect out of the box. I see no need to spend more on a forged upper when these perform as well as any.