We have seen several occurrences of the inside diameter of part #5 of the LAW Tactical Folding Adapter, the Threaded Flange, being too small causing carrier drag. LAW Tactical has replaced this part for customers upon contact.
If you are using the LAW Tactical folding adapter with a PWS Buffer Tube, you will need to purchase the Modified Buffer Tube.
Older Mk1 Mod1 bolt carriers required a modified bolt carrier extension from Law Tactical. In early 2018 the inside diameter of the bolt carrier was increased to mil-spec 0.625 inches, and the modified bolt carrier extension is not necessary.