The only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Forster gauges are made to SAAMI specs. 100-010-715 - This gauge is .0005 inch (5/10,000 inch) under 7.62 NATO specification for NO-GO dimensions for safety. Mfg: Forster SPECS: Machined Steel. Size varies with caliber and gauge style. NOTE: Gauges Interchangeable between calibers have same Stock #. .30-30 Cartridges are .219 Wasp, .219 Zipper, .22 Sav HP, .30-30, .32 Win Spl, .32-40, .375 Win and .38-55. .30-06 Cartridges are .25-06, .270 Win, .30-06, 8mm-06

Forster Headspace Gages areused to determine whetheryour rifle headspace is correct and within SAAMI specifications.These gages are made to chamber in yourrifle similar to a cartridge. Available in ""GO"", ""NO GO"",and Field Gage lengths. Mfg: Forster

Headspace gauges in .001"" increments from 1.4636"" to 1.4736"" cover everything from Go to Field, including No-Go. Checks both .223 Remington commercial chambers and 5.56mm NATO chambers. Hardened steel, precision ground to SAAMI's ANSI tolerances. Includes polypropylene storage case. Mfg: Forster SPECS: Hardened steel. 11 gauges in .001"" increments from 1.4636"" to 1.4736"". For 223/5.56mm NATO only.

Lets you know the exact headspace dimension on any rifle chambered in .308 Win., .223, or .22LR. Covers every size chamber all the way from Go to Field, in .001"" increments. Perfect for match shooters, armorers, or sportsmen looking for the most accurate, and reliable way to track locking lug and chamber wear on high quality, match grade barrels. Each gauge is precision-ground to the exact tolerance listed. Mfg: Forster SPECS: Individual high speed steel gauges, hardened and ground. Kit contains 1 each of size listed.

Forster Headspace Gages areused to determine whetheryour rifle headspace is correct and within SAAMI specifications.These gages are made to chamber in yourrifle similar to a cartridge. Available in ""GO"", ""NO GO"",and Field Gage lengths. Mfg: Forster