I currently have a POF P415 that I am satisfied with, but I’d like to try my hand at building an AR. I’d like to begin with a quality lower receiver, preferably something with built-in ambidextrous controls, as I am lefthanded. I know LWRC and POF sell ambi lowers, but I’ve also looked at LMT and BCM (which are cheaper) , figuring I can add ambi controls myself. I plan on making this a lightweight AR with a 16" barrel and a possibly a keymod handguard. Basically, the opposite of my POF.
I’m seeking any advice/suggestions on a lower. Some people say that any lower will do, but I imagine that there have to be some differences that make some makes and models preferable to others. Any feedback back would be appreciated.
Were you looking for a stripped or complete lower? If stripped, any in spec will do, just pick a roll mark you like. I’ve used spike’s mostly and have gotten along well with them. My only issue was my BCM uppers will not fit onto a Rock River lower.
I’ve been looking for one as well. I am also a lefty. I like the ambi bolt release idea, but honestly as a lefty I think the bolt release is the least important control you need on the other side. I actually prefer locking open/releasing the bolt with my trigger finger-it seems to be just as fast, and really simplifies double feed clearances. I would look at getting a standard lower, then installing a B.A.D. A.S.S. and an ambi mag release (norgon, troy). I was considering an ambi lower, but I may just go standard and use the money to save for a T-1. My opinion only.
I’m amenable to either a stripped lower or a complete one, if it comes with a good trigger and furniture I like. I would get a KAC lower if I could find one, for instance. My POF has an ambi bolt release, mag release, and safety. My LMT MWS has an ambi mag release and safety, but only a left side bolt release. I prefer the POF setup, but the LMT configuration is okay, especially since there’s always the BAD lever option.
Some roll marks spend more time and money making sure that the lower that they had manufactured for them is in spec before putting it in their rifles. It’s probably worth thinking about that before just assuming that "any lower will do ". Every rifle brand tests, measures, and rejects a certain number of lowers before assembly. Those with the more rigorous QA process naturally have to charge more since they take more time and throw away a higher percentage but you’re more likely to get a good rifle. With the bargain brands, you have to wonder where they’re cutting corners.