Lee 1 1/4-12 Breech Lock Update Kit

The Lee 1 1/4"-12 Breech Lock Update Kit converts older Lee Precision presses and compatible third-party models to accept Lee's Breech Lock quick-change bushing system. This upgrade eliminates the need for traditional lock-ring wrenches and allows shooters to swap between different bushing sizes in seconds, making it an essential modification for reloaders who work with multiple cartridge types or need faster press changeovers during high-volume loading sessions.

The kit includes a 1 1/4"-12 breech lock adapter, spline drive lock-ring eliminator, and lock-ring wrench. These components work together to modernize the press's top end while maintaining full compatibility with existing tooling and accessories. The 1 1/4"-12 thread specification ensures precise fitment on a wide range of single-stage and turret press platforms. Reloaders benefit from reduced setup time between cartridge changes and improved consistency when swapping between different reloading dies and bushing combinations.

This upgrade is designed for reloaders who own Lee Classic Cast, Hornady Iron, Hornady Classic, Hornady Lock-N-Load, RCBS Rock Chucker Supreme, Redding Big Boss, or Redding 700 Ultra Magnum presses. Whether loading rifle or pistol ammunition in single or small-batch quantities, the Breech Lock system speeds up press operation and reduces downtime. The kit transforms standard presses into quick-change platforms without requiring permanent modification of the original press structure.