Sinclair #1 Adjustable Bore Guide Collar, .630

A standard bolt collar is included with each Sinclair Adjustable Rod Guide that will fit standard diameter actions (Remingtons, Winchesters, Rugers, Browning, Savage, Mauser). For all other actions a different sized bolt collar may be required and determined by measuring the bolt diameter.

This collar is suitable for use with the Sinclair #1 All-Purpose Bore Guide. Collar diameter 0.630 inches.