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Swapped out the buffer tube and stock on my mutt this evening. i must've dropped that little metal retainer bit about 10 times trying to get it installed.
One would think that a company with as much innovation as Magpul they would have thought about that.
great system - works awesome with my MS3, but what a pain in the ass to install!.
I know exactly what you're talking about when i did my first lower build. It was a pain in the arse and i screwed up my spring doing it. I wish magpul would just make 2 different parts, Commercial and Mil-spec version, with an explanation on their website showing you how to identify your tube.
This led me to do the set screw mod to the rear takedown pin. Luckily my New Frontier Armory G15 lowers already had pre-threaded takedown pin holes. All i had to do was buy the set screws which now holds the spring in place instead of the rear plate, which would make the ASAP place a breeze to install, however, i went with different sling plates because i'm worried of losing the little square nub in the future.
Maybe this thread can be a little feedback for magpul. Customers don't Like the NUB!!!!!!!!!!