AR lowers

[Dolomite_supafly]

The majority of isses with AR's is not related to the lowers but the components used in their build.

Dolomite

[Guest DaG]

Mega Machine and LOKI weapons systems lowers are very nice. Firebird Precision is another one.

[Howler]

This is what I've been looking for. Good thread with info that's needed.

[Guest Blown4v]

Palmetto State and Surplus Ammo's Aero Precision lowers are low$$ and solid. You can build a full AR for cheap from either of these.

I've had an infatuation with Rainier Arms and Mega lately. If I dont buy a complete rifle, one of these two will be my base for a build

[rgaper]

The majority of isses with AR's is not related to the lowers but the components used in their build.

Dolomite

I agree. A questionable lower is often an indicator of a series of bad purchases, and is rarely the source of the issue by itself. I will say this - Given the choice of a crappy lower or a crappy upper, I'll take the crappy lower every day of the week.

When you do see a lower-related problem, it's almost always the LPK in the form of a crappy two-stage trigger that doesn't hold up. Other than that, pin holes being out of spec is probably the next most common I've seen with lowers. Last year I was helping 3 guys from TN do a 300 round ramp-up for their first carbine course. One of the guys had a DPMS lower where the holes were "close enough" to let it function, but far enough off that it was wearing unevenly. The long term health outlook for the gun wasn't good due specifically to the lower.