[35NCO]

To add another way this malfunction can occur. I recently had a customer gun where they complained the bolt did not lock to the rear. I noticed the bolt did not go back far enough to engage the lock. The reason why the bolt could not engage the lock at being pulled full rear is because this carbine had a rifle length buffer spring installed.

I switched it out to a proper carbine length spring and it worked fine again. So when buying these AR's that folks are building left and right, keep an eye out for what parts are in them. The other solution to this spring scenario is that you can cut about 2 inches of coil from a rifle spring to make a carbine spring.

As for RRA, never had any issues with them. Its really hard to say with AR's what is good, great and amazing. Its just like 1911's or anything other gun, you just get what you pay for. Some names are just names and some brands are better than others. There really is not any "deals" that are as good as they claim to be for the price. However, I would have to mention that I bought a few Palmetto uppers awhile ago that I was really surprised at how good they were. So you never know.

I have also been told by various reps that Aero Precision is the same maker of Spikes, Noveske, and Armalite. With all these contracts right now, many of these makers are exactly the same in CNC but better in assembly QC.

You cant really go wrong taking your time to learn to build your own quality AR.