Aftermarket Product Compatability

Questions about compatability with after market accessories

Does the PRO line work with extended bolt catches?
We made a change to the MK1 PRO upper receiver in early 2020 to allow users to add after-market extended bolt catch/bolt releases like the Phase 5 and Radian Extended Bolt Catch. Please click here to see the lineart of the change in revs. Please note...
Do your firearms work with Simunition or UTM rounds?
Yes, our firearms do work with Simunition and UTM rounds when used with the standard rifle/carbine conversion kit. When using the conversion kit, the piston driven rifle is essentially turned into a straight blowback gas system.
Fostech Echo, Binary and other triggers requiring full auto carriers
As of 2020, we moved to a universal carrier that is full-auto rated for all MK1s. If your carrier has serrations on the side, it is full-auto rated. If you have an older style MOD 2 carrier that does not have serrations, and would like to purchase a ...
Does PWS use a proprietary charging handle or can it be replaced with the unit of my choice?
PWS uses a standard Mil-Spec dimensioned charging handle which can be replaced by most units on the market depending on your needs.
Can I add an aftermarket trigger of my choice to my PWS build?
Standard aftermarket triggers can be added to any PWS rifle, pistol, or lower assembly.
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