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The "Poly" blocks are dishwasher safe for easy cleaning
This clever system cleans rifle and handgun barrels with a minimum of effort and mess
Available with large rifle primer or small rifle primer pocket
254 Package Quantity 100/Box
Sinclair Bullet Comparator Insert 375 Calibre (0.375") Stainless Steel Bullet Dia (Inch)_0.312 The "Poly" blocks are dishwasherThe Sinclair Bullet Comparator inserts are meant to be used with the Sinclair Bullet Comparator and Bump Gauge Body or Hornady Comparator Body. These inserts are stainless steel and machined with a taper and a short straight section to more accurately duplicate the chamber throat. This eliminates the wobble experienced with many comparators which have standard drilled holes. This design allows you to quickly and accurately measure and compare bullet
