Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 18M100RM1B

Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a more true to mil-spec design, the MK1 MOD 1-M line is a go-to for not only civilians, but also Law Enforcement. With the fully forged lower receiver, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.