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FORSTER PRODUCTS, INC.
HEADSPACE GAUGES

757253992490 100010713

Absolutely Essential For Accurate, Safe, Chamber Work

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.

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, .338-06 and .35 Whelen. Magnum Cartridges are .257 Weatherby, .264 Win, 6.5 Rem Mag, .270 Weatherby, .275 H&H, 7mm Rem Mag, 7mm Weatherby, 7x61 S&H, .300 H&H, .300 Win Mag, .30-338, .300 Weatherby, .308 Norma, 8mm Mag, .338 Win, .340 Weatherby, .350 Rem Mag, .358 Norma, .375 H&H, .416 Rem Mag and .458 Win.

Plus...

Absolument essentiel pour un travail de chambre précis et sûr

Le seul moyen de mesurer et de tester avec précision la longueur de la chambre du fusil. Essentiel lors du montage d'un nouveau canon pour garantir une chambre étroite, précise et sécurisée. Chaque fois que tu achètes une arme d'occasion, vérifie toujours le headspace avant de tirer. Les gauges Forster sont fabriquées selon les spécifications SAAMI. 100-010-715 - Ce gauge est de .0005 pouce (5/10 000 pouce) en dessous de la spécification 7.62 NATO pour les dimensions NO-GO pour la sécurité.

SPECIFICATIONS : Acier usiné. La taille varie selon le calibre et le style de gauge. REMARQUE : Les gauges interchangeables entre calibres ont le même numéro de stock. Les cartouches .30-30 sont .219 Wasp, .219 Zipper, .22 Sav HP, .30-30, .32 Win Spl, .32-40, .375 Win et .38-55. Les cartouches .30-06 sont .25-06, .270 Win, .30-06, 8mm-06, .338-06 et .35 Whelen. Les cartouches Magnum sont .257 Weatherby, .264 Win, 6.5 Rem Mag, .270 Weatherby, .275 H&H, 7mm Rem Mag, 7mm Weatherby, 7x61 S&H, .300 H&H, .300 Win Mag, .30-338, .300 Weatherby, .308 Norma, 8mm Mag, .338 Win, .340 Weatherby, .350 Rem Mag, .358 Norma, .375 H&H, .416 Rem Mag et .458 Win.

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Évaluations client de FORSTER PRODUCTS, INC. 5.56MM NATO COLT SPEC (1.4646") GO GAUGE

Nombre d'évaluations: 13
De brownells.com: 13
Note moyenne: 3.9

Not Good (07.06.2014)

2 piece gauge that comes apart the first time you use it, a poor design and not up to their usual quality. Not one I would buy again!

Unusual headspace gage (08.09.2017)

Brownells located .303 British GO and NO-GO gages. It took a while to get these out-of-stock items, but Brownells kept my purchase record and sent the items when they came back in stock. Today I discovered I now also needed a .303 British FIELD gage, and I am convinced that my FIELD gage will arrive when back in stock. They stick with it. THANKS!!!

NOT useful for Surplus Military Rifles (24.08.2014)

I expected this gauge to conform to Military specification of the Enfield No4 MK1. After purchasing both GO & NO-GO, I found out these gauges give false readings as they are not intended for proper Headspace gauging. I'm hopeful Brownells will accept these gauges in return and provide me with the proper Military Spec gauges.

Does the job!!!!!!!!!! (19.09.2011)

Great tool and very easy to use. You do not have to take the bolt apart to use this tool. Big plus.

Great Tool (20.09.2011)

Great tool! No need to take the bolt apart to use this gauge. Slips right in the chamber. Must have for checking old carbines for service.

Recommended (01.11.2009)

What can I say? They work and the price is right.

Recommended (01.11.2009)

They work and the price is right.

Absolutely essential for a safe build (14.03.2010)

This Forster Field Headspace Gauge is a nicely constructed product that performs an often ignored, but very important function. If your bolt carrier group locks into battery against this gauge (the biggest of the three sizes), you have an unsafe chamber headspace and should not shoot your rifle until is it fixed. The only downside is the price, because its a very limited function tool. Bottom line, you need this tool(along with Go and NO-GO gauges) if you are building an AR.

More useful than Foster NO-GO gauge (10.11.2013)

The SAAMI limit is actually 1.4736 so this 1.4696 gauge may prove to be more useful as a NO-GO gauge than a FIELD gauge in many instances (manufacturers often chamber to 0.002" plus over SAAMI mins and this gauge is SAAMI min plus 0.006). The alternative Brownells (Foster) FIELD gauge checks the true SAAMI max limit ("FIELD") of 1.4736 and permits 0.004 more headspace than this gauge.

For further reference, the Foster NO-GO gauge is 1.4696 and only 0.003" above SAAMI min headspace and the Foster GO gauge is at the SAAMI min limit.
In my experience, most AR bolts will close on the Foster NO-GO gauge and this "FIELD" gauge may actually be a better test for "NO-GO," unless all your barrels are custom-chambered!

The best solution for checking headspace, post-chambering, is the full set of 11 Foster gauges offered by Brownells. It provides 0.001" resolution over the entire 1.4636" to 1.4736" SAAMI range, which includes any 5.56 specs and limits too. (5.56 headspace specs all lie withing the SAAMI min to max range.)

An absolute necessity for building an AR (14.03.2010)

This Forster NO-GO Headspace Gauge is a nicely constructed product that performs an often ignored, but very important function. If your bolt carrier group locks into battery against this gauge (the middle of the three sizes), you may have an unsafe chamber headspace and should try the larger FIELD gauge before shooting your rifle. If you are planning to build an AR, this tool is a must.

Good when chambering but that's all (10.11.2013)

In studying the prints for many 5.56 and 223 chamber reamers and the SAAMI 223 Rem spec, I discovered that headspace gauges and chamber reamers are all over the map. This Forster NO-GO gauge appears check a rather arbitrary point within the SAAMI min to max headspace spec range so one can't draw much of a conclusion based on a gun failing a check with this NO-GO gauge.

More specifically, the min to max SAAMI headspace spec spans 0.010 inches. The Forster GO gauge checks the bottom limit of the SAAMI spec and the Brownells (Forster) FIELD gauge checks the upper limit. Various NO-GO gauges fall in various places with respect to 5.56 and 223 Rem specs, but these intermediate gauges (including 5.56 gauges) all lie between the SAAMI 223 Rem min and max headspace limits.

The problem is this Forster NO-GO gauge checks only 0.003" above the min SAAMI spec. I've learned that barrel manufacturers often chamber their barrels 0.002" longer the SAAMI minimum (the manufacturers use SAAMI min + 0.002" as THEIR mininum manufacturing spec), due to the dangers posed by "tolerance stackup" of parts and insufficient headspace. Given that the Foster NO-G0 gauge is only another 0.001" longer than these barrel manufacturers' min chamberings, it is common for a bolt to close on this Foster NO-GO gauge.

While the Foster NO-GO gauge provides a sensible limit for custom chambering new barrels, its usefulness is very limited for checking existing barrels where a safety check can be accomplished with only a GO and FIELD gauge set. Given where most barrels are headspaced, a NO-GO gauge close to the middle of the SAAMI range would be more useful.

Even more useful is Brownells ".223/5.56 Match Headspace Gauge Set. It can be used to fully assess the headspace of an existing barrel.

An absolute necessity for building an AR (14.03.2010)

This Forster GO Headspace Gauge is a nicely constructed product that performs an often ignored, but very important function. If your bolt carrier group locks into battery against this gauge (the smallest of the three sizes), you are good to go. This is an absolute necessity if you are building an AR.

regret buying (26.05.2010)

These gauges are difficult to read what type of gauge it is.the type is so faded and there is no color codeing I spend too much time fiddling with trying to figure out under a bright light and magifying glass if im holding a GO,NOGO or field gauge. Other than that they work.I wish I would have bought gauges that have the easy to read color bands .

Lire 13 plus d'avis sur brownells.com

37.9 59.9 63 CHF

Référence: 100010713
FORSTER PRODUCTS, INC. 5.56MM NATO COLT SPEC (1.4646") GO GAUGE
Ref Fabricant: HG02231.4646-SP 757253992490 Le seul moyen de mesurer et de tester avec précision la longueur de la chambre du fusil. Essentiel lors du montage d'un nouveau canon pour garantir une chambre étroite, précise et sécurisée. Chaque fois que tu achètes une arme d'occasion, vérifie toujours le headspace avant de tirer. Les gauges Forster sont fabriquées selon les spécifications SAAMI. 100-010-715 - Ce gauge est de .0005 pouce (5/10 000 pouce) en dessous de la spécification 7.62 NATO pour les dimensions NO-GO pour la sécurité.

54.9 CHF 43 CHF 54.90 *

Délai de livraison environ 8-15 jours depuis l'entrepôt des États-Unis.

Caractéristiques: Calibre: 5.56 mm NATO Style: Go Jauge

FORSTER PRODUCTS, INC. HEADSPACE GAUGES

Évaluations client de FORSTER PRODUCTS, INC. 5.56MM NATO COLT SPEC (1.4646") GO GAUGE

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Évaluations client de FORSTER PRODUCTS, INC. 5.56MM NATO COLT SPEC (1.4646") GO GAUGE

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FORSTER PRODUCTS, INC.
HEADSPACE GAUGES