Ozzistraightshooter Chamber Headspace Gauge set for
300 BLACKOUT Rifles.
 
Precision 300 Blackout chamber head-space gauge set. 
Made to CIP European standard dimensions.
 
Set includes GO gauge and NO-GO gauge.
 
With these tools you can check the chamber headspace.
 
 
These are top quality tools designed for professional use.
Should only be used by a professional Gunsmith.
 
Made in Serbia from German Bohler S705 steel.