Looking at purchasing the Bushmaster LPK or the Rockriver Arms LPK. Both would be a standard trigger, no two-stage trigger needed. So... What's the difference between then, quality and functionally wise
Also, what's the difference quality and functionally wise between Bushmaster and Rockriver Arms A2 Buttstock? All the parts look the same but the price is much
different. Just looking for reliable lower part kits/basic parts to install...nothing fancy; simple build.


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