xen0ph0n Posted March 9, 2020 Share Posted March 9, 2020 Does anyone have any experience running a JP GMR-15 upper on a non-JP lower? Specifically, I have a PWS PCC lower that I'd like to put a side-charging JP upper on. Link to comment
Sniperboy Posted March 10, 2020 Share Posted March 10, 2020 (edited) I have not tried PWS but with a QC10 and Spartan (New Frontier) lower, the complete JP upper works fine. In my observation there's nothing really particular with upper assemblies. All the dimensional distinctions are designed into the lower. Edited March 10, 2020 by Sniperboy Link to comment
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