DetailsThe MK1 MOD 1-M Replacement rail is for owners of PWS MK1 MOD 1 owners to replace their current KeyMod rail with MLOK®. Includes mounting hardware and instructions.
Gas Piston System: Mid-Length
For use on: PWS MK116 MOD 1/MOD 1-M uppers in .223 Wylde
As we do make occasional changes to our product line, the gas piston system length on our firearms has been updated a few times. Please ensure that your current handguard matches the lineart here, paying attention to the location of the gas adjustment settings. For further assistance, please contact PWS Customer Service.