Enhance your firearm versatility with the Strike Industries OPPRESSOR Universal 3-Lug QD Base Set. This innovative quick-detach base allows seamless transitions between multiple firearms using a single SI OPPRESSOR Universal body. Crafted from durable S45C steel it ensures stability and reliability in every use. The set includes comprehensive hardware for easy installation on compatible barrels featuring a 12 concentric shim washer alongside 12 and 5/8 crush washers. Ideal as a spare or replacement this base set offers a cost-effective solution for maximizing the utility of your OPPRESSOR Universal system across different weapons.