Sinclair International 30 Caliber (0.308") Comparator Insert

Sinclair International .30 Cal 45 deg Shoulder Bump Gauge Insert

Sinclair International .338 Federal/.338 Lapua Magnum 20 deg Shoulder Bump Gauge Insert

300 BLACKOUT MODULAR HEADSPACE COMPARATOR INSERT

375 CALIBER MODULAR HEADSPACE COMPARATOR BULLET INSERT

Sinclair International .17 Cal/.20 Cal/.22 Cal/.270 Cal/.30 Cal/.338 Cal Hex Style Bullet Comparator

20 CALIBER MODULAR HEADSPACE COMPARATOR BULLET INSERT

Sinclair International .17 Cal/.45 Cal Bullet Comparator and Bump Gauge Body Kit