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Posted on 3/5/21 at 11:03 am to stuckintexas
Stripped forged lowers are essentially all the same until you get into the really high end manufacturers, and even then there isn't a ton of difference. You're paying mostly for the roll marks.
The Aero M4E1 lowers are nice because the trigger guard is integrated (one less thing that you have to buy or might break), it has a tension screw for the upper and lower, and the bolt catch pin is threaded. Worst part of this lower is the giant Avengers "A" roll mark, which some people like. Aero has blem sales pretty often where you can get their lowers for <$70, so keep your eye out.
One thing I learned after my first build is its good to have an extra stripped upper and lower receiver. As you upgrade parts on your primary build (and you will, no matter how many times you say you won't), you can slap the old parts on the extra stripped receivers. Eventually you'll have 2 complete receiver sets
The Aero M4E1 lowers are nice because the trigger guard is integrated (one less thing that you have to buy or might break), it has a tension screw for the upper and lower, and the bolt catch pin is threaded. Worst part of this lower is the giant Avengers "A" roll mark, which some people like. Aero has blem sales pretty often where you can get their lowers for <$70, so keep your eye out.
One thing I learned after my first build is its good to have an extra stripped upper and lower receiver. As you upgrade parts on your primary build (and you will, no matter how many times you say you won't), you can slap the old parts on the extra stripped receivers. Eventually you'll have 2 complete receiver sets
Posted on 3/6/21 at 9:19 am to The Nino
quote:
The Aero M4E1 lowers are nice because the trigger guard is integrated (one less thing that you have to buy or might break),
The colt ar10 has a small release to open up the bottom of the trigger guard which is nice when you're hunting with gloves in the winter, so that really wasn't a concern of mine. But you're right about the stamps. That was a reason I didn't like several of the available options. I'm a comic book nerd and didn't like the avengers A
Great advice on the second upper and lower!
Posted on 3/6/21 at 9:59 am to stuckintexas
The components of the PSA kits are excellent. Many of them are military FN overrun parts. But their assembly can be very suspect. If this is your first build, have someone very familiar look it over. I have seen improperly staked gas keys, improperly mounted front sight bases and even a completed upper where they forgot to torque down the barrel nut. My buddy brought it to me complaining of accuracy issues and wanted me to look at his optic mount. I put the upper in the vise and I could grab the end of the barrel and wiggle it back and forth. I said "well that ain't right."
They buy parts in various states of assembly and then complete them in house. Some of their people know what they are doing, some are new and some are just idiots.
They buy parts in various states of assembly and then complete them in house. Some of their people know what they are doing, some are new and some are just idiots.
Posted on 3/6/21 at 11:38 am to jbgleason
It will be my first build, so I definitely won't be doing it alone. A couple of the other FFs have a good bit of experience with them. We're gonna build it at one of their shops.
Posted on 3/6/21 at 12:09 pm to stuckintexas
I used a PSA lower parts kit in an Aero/BCM build recently and everything went together pretty easily. This was the EPT and I did have some initial issues with the trigger resetting.
Examined the trigger group and where the hammer and disconnector interface, both of the edges were pretty sharp. I ended up very gently filing both edges and no issues since. It probably would have broken itself in but just FYI if you encounter this issue.
Examined the trigger group and where the hammer and disconnector interface, both of the edges were pretty sharp. I ended up very gently filing both edges and no issues since. It probably would have broken itself in but just FYI if you encounter this issue.
Posted on 3/6/21 at 1:55 pm to Chilton4Bama
quote:
both of the edges were pretty sharp. I ended up very gently filing both edges and no issues since.
Uhhhh. If that was the sear engagement surfaces, you really need to be careful. Those surfaces are supposed to be square. If you rounded them, which is what it sounds like you did, it can result in the gun firing when bumped and / or going full auto. Both bad. With AR's, if you get fire control parts that aren't acting right it is generally advised to just replace them. I would get some new parts in there if you removed metal from those surfaces.
Posted on 3/6/21 at 2:01 pm to stuckintexas
quote:It's obnoxious. Not sure who designed it and approved it, but they really should be fired.
I'm a comic book nerd and didn't like the avengers A
Ballistic Advantage is a subsidiary of Aero. They're known for their barrels, but their uppers and lowers are made by Aero and then they slap their rolls on it. Looks better IMO
Posted on 3/6/21 at 10:35 pm to stuckintexas
You may be waiting a while. They're slow as hell lately.
Posted on 3/6/21 at 11:13 pm to down time
We got an ETA of Tuesday on our shipping tracking. We'll see!
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