Sons of Liberty Gun Works Presscheck, Quick Detach Barricade Stop, M-LOK, Steel Construction, QPQ Finish, Black BARRICADE-BLK The Presscheck Barricade Stop is a precision-engineered MLOK accessory that achieves two functions in the same footprint" it serves as a Barricade Stop and a QD Sling Mount. The flush mounting and compact design allow the shooter greater ease of movement and quick transitions between various shooting positions while preserving valuable space on the handguard. These are 100% USA made from high-quality steel materials providing resilience from impact" heat" and harsh weather conditions.