I don't think this is completely true. . . . edited (sorry).
Check out this post: http://www.theoutdoorstrader.com/sh...for-AR-in-5.45&p=312461&viewfull=1#post312461
The adams arms kit COMES with the extra power hammer spring. The bolt comes complete as well. I put in a heavy spikes buffer along with a heavy spring. Runs like a champ.
I dont think the lower had anything to do with it in your case. Sounds me like crap ammo. The extractors on the adams arms are TIGHT. They will pull even the hardest stuck cases out of the chamber.
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