People who think highly of the 180b need to get out more...
It's only plus is the price and well... You get what you pay for.
Chinsy/weak buttstock.. Don't tighten too much, you'll break it.
Stamped and pig-welded upper receiver... Good enough I suppose for a combat arm. Cheap and easy to mass produce.
Plastic lower... Not bad in and of itself, but... Careful with that pivot pin.
Trigger... Even for a $700 gun it's baaaad
I owned on for a while... Not impressed.
Yawn...
I've heard the same thing about the Glock for YEARS. Glocks work fine and so do AR180B's.
Stamped and welded upper? Are you kidding? You mean like the AK, RPK, Dragunov, MP44 and all the other unsuccessful combat rifles???
Cheap and easy to produce... is that supposed to be a negative somehow?
The PIVOT PIN??? Yes, I agree this is the weakest part of the design and could use improvement, HOWEVER, it doesn't do a damn thing when the rifle is assembled - it is only a potential problem if you don't follow the manufacturer's recommended disassembly procedures and abuse your rifle.
The bottom line is that it is not a modern AR15. The modern AR15 is a better rifle, yes. A better rifle you can fondle at home and shoot at a range. The AR180b is a decent compromise giving you most of the features and benefits of the AR in a gun you can take on a walk through the woods or to hunt 'yotes or whatever.
Bear in mind when Eugene stoner designed the AR180 (which is an AR180B upper on a polymer lower that wasn't technologically feasible when the original rifle was designed and that had some FCG parts swapped to AR15 parts to make it easier to produce), the AR180 very nearly REPLACED the M16 in US service. Only the weight of the US logistics juggernaut that had already adopted and started supporting the AR for immediate deployment to Vietnam halted the US government from completing AR180 trials to REPLACE the then widely unpopular M16.
The AR is the rifle it is today because of nearly 50 years of continuous development and improvement by a superpower. In 1965 the AR180 was a better rifle than the M16 by most accounts.
The original 180 had some issues with the buttstock hinge and a few other minor items, but had it been developed as thoroughly in service as the AR15, we'd probably all be arguing how great the 180 is compared to the M16 which had a low tolerance for dirt ingress, lack of maintenance and a high level of troop training to support its use. Certainly the guys who had to turn in M14's for the M16 HATED the black rifle until improvements were made.
Frankly, if the pivot pin had been steel re-infoced by Armalite and Stormwerkz have developed better buttstock solutions a little earlier, the 180B would be widely owned and appreciated by most Canadian black rifle enthusiasts. And if the SL8 were built less ugly in its commercial clothes it might also have converted many more shooters into owners.
All this to say that if you dislike the AR180B, that's fine, but dislike it for the right reasons (e.g. it doesn't fit you well, doesn't like your favorite load, doesn;t have the features or gucci-accessories you want to use, etc.) not regurgitated internet myths and half-truths.
FWIW, I have an AR180B alongside my other black rifles and it gets more use than I ever got out of the SL8 or AR15. Not because it was better, but because it was non-restricted and lighter and handier than an SL8 with acceptable performance to boot.