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

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

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

Sinclair International .20 Nosler 30 deg Shoulder Bump Gauge Insert

Sinclair International .257 Roberts +P/.338 Cal 40 deg Shoulder Bump Gauge Insert

Sinclair International .243 Winchester/.308 Win 20 deg Shoulder Bump Gauge Insert