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I'm starting to look further into this. Can someone tell me what the difference is between these two? Obviously I will need to purchase a UMP lower and swap out the USC internals. I see the second one is US made, but I'm just not sure which block I need to attach the folding stock:
HK UMP Demilled Receiver - HKPARTS.NET
HDPS UMP Stock Block - HKPARTS.NET
Thanks for everyone's help.
HK UMP Demilled Receiver - HKPARTS.NET
HDPS UMP Stock Block - HKPARTS.NET
Thanks for everyone's help.