Lockbar Pinion Set to assemble onto your existing base to complete a Garand type II or Type III lock bar rear sight. The Round Lockbar Type II is correct for early model and the Square Lockbar Type III the late model of this design. This set is complete with the spring and lockbar detent. This is the long pinion and these parts are all very good condition original USGI parts from WWII. This is a very nice set and is ready to install in your base. These are file photos and a good representation of what you will receive. Use the drop down box to pick which type you want.