5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
5.56 Armorers Headspace Gauge Kit
None
MadeInUsa OFF

FORSTER - 5.56 Armorers Headspace Gauge Kit

6 Reviews
5.56 Armorers Headspace Gauge Kit
Brownells #
430106853
MFR #
HG0556-SET
UPC
757253989872
$138.99
Coupon Code
Purchase Limit Help

In stock

Standard Shipping Estimated Delivery
Estimated delivery: Oct 30
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}
Specifications
Cartridge:
5.56x45 NATO
Headspace Gauge Type:
Set
Quantity:
1
Restriction
Gun Tool Restriction:
Yes
View US State Restrictions
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}
What is the FORSTER - 5.56 Armorers Headspace Gauge Kit?

FORSTER 5.56 ARMORER'S HEADSPACE GAUGE KIT

The Forster 5.56 Armorer's Headspace Gauge Kit is a professional-grade headspace inspection system designed to help armorers, gunsmiths, and AR builders quickly verify chamber dimensions in 5.56 NATO rifles. Exclusively available through Brownells, this three-gauge kit provides a practical method for evaluating headspace at critical measurement points, making it ideal for new rifle builds, barrel installations, maintenance inspections, and troubleshooting.

Unlike traditional headspace gauges that often require bolt disassembly, these gauges feature a reduced rim and ejector cut-out design that allows headspace checks to be performed without removing the ejector from the bolt. This streamlined approach helps save valuable shop time while maintaining the accuracy needed for professional armorer work.

Manufactured by Forster, each gauge is precision-machined from steel to provide reliable, repeatable measurements. The inclusion of GO, Midrange, and Maximum Field gauges gives armorers a more complete picture of chamber condition, helping verify proper barrel installation and monitor firearm wear over time.

FEATURES

  • Complete 5.56 NATO headspace gauge kit
  • Manufactured by Forster
  • Designed specifically for AR-style rifles and 5.56 NATO chambers
  • Includes GO, Midrange, and Maximum Field gauges
  • Reduced-rim design allows use without bolt disassembly
  • Ejector cut-out simplifies headspace inspections
  • Precision-machined steel construction
  • Ideal for rifle assembly, barrel installation, and maintenance
  • Provides repeatable and accurate headspace measurements
  • Professional-grade armorer and gunsmithing tool set

SPECS

  • Brand: Forster
  • Product Name: 5.56 Armorer's Headspace Gauge Kit
  • Application: Headspace Inspection and Chamber Verification
  • Cartridge Compatibility: 5.56 NATO
  • Material: Steel
  • Gauge Design: Reduced Rim with Ejector Cut-Out
  • Gauge Dimensions
  • GO Gauge: 1.4646"
  • Midrange Gauge: 1.4686"
  • Maximum Field Gauge: 1.4736"

INCLUDED

  • 1.4646" GO Length Gauge
  • 1.4686" Midrange Gauge
  • 1.4736" Maximum Field Gauge

CUSTOMER INSIGHTS

Armorers and AR builders appreciate the ability to perform headspace checks without disassembling the bolt, significantly reducing inspection time during rifle assembly and maintenance. The addition of the Midrange Gauge provides a valuable reference point between standard GO and Field measurements, giving users greater insight into chamber dimensions and overall firearm condition.

The Forster 5.56 Armorer's Headspace Gauge Kit delivers a convenient and precise solution for evaluating 5.56 NATO chamber headspace. Featuring dedicated GO, Midrange, and Maximum Field gauges, along with a unique reduced-rim and ejector cut-out design, this kit provides the accuracy, efficiency, and durability demanded by professional armorers and serious AR builders.

Gun Tool Restriction
Gun Tools have restricted shipping to CA.

Please select a FFL Dealer
Dealers near
Nearest first
arrow-down

Enter dealer or account folder information

* Required fields

MANUALLY ENTERED

Note: Hours and fees may change. Contact the dealer to confirm current information.

* Must accept required fields.

pin wrong
No dealers found

Please search by another zip code or city and state to find the nearest dealer.

  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Brownells Retail Store
Quickest, Hassle-Free Transfer

Pin in
Phone
Accepts ammo transfers Accepts NFA transfers
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
dealers near

Alternative products

Right Badge OFF  
5 Stars

200

300

Add on

Right Badge OFF  
5 Stars

200

300

5.56 ARMORER'S HEADSPACE GAUGE KIT REVIEWS

5.0
6 Reviews
5 Stars
100%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Stars
0%
Reviews Summary
Customers consistently praise the 5.56 Armorer's Headspace Gauge Kit for its effectiveness and reliability, especially for first-time builders. Reviewers appreciate the confidence it brings to their builds and its accuracy. Although some note the price as higher than average, they feel the quality justifies the investment.
What Reviewers Are Saying
Product Quality
100%
Reviewers frequently highlight the high quality and reliability of the gauge kit, emphasizing its effectiveness in checking headspace and ensuring accurate measurements. Many regard it as a leading product in its category.
Usability for Beginners
60%
Several customers mention the kit's user-friendliness, particularly appreciating how it helps first-time builders check headspace with confidence, making it a great tool for those new to assembling firearms.
Value for Money
40%
Although some acknowledge the higher price point, many reviewers believe that the quality and peace of mind the product provides justify the investment, reflecting a positive perception of its value.
Accuracy
60%
Customers express satisfaction with the accuracy of the gauges, stating they measured perfectly against known calibrated gauges, enhancing trust in the product’s performance.
Brand Reputation
40%
The Forster brand receives positive mentions, with reviewers referencing its established reputation for quality in go/no-go gauges, which influences their purchase decision favorably.
5
Forster 5.56 Armorer's Headspace Gauges
These Armorer headspace gauges are a game changer. Not having to disassemble the Bolt to check headspace and then having to reassemble the Bolt is a real timesaver. Just be sure to read the directions on how to position the gauge into the chamber before checking headspace. Great addition to my tool kit.
Would you recommend this? Yes, I would recommend to a friend
5
Headspace
Excellent product great service
5
Great tool
Great tool to check headspace for a rifle. Changed out barrels and wanted to make sure everything was good.
Would you recommend this? Yes, I would recommend to a friend
5
Good Set
I'm a first time builder and wanted to make sure that I was checking headspace simply because I am very new to this. The go and no-go gauges gave me the confidence in my build. It's expensive, but the peace-of-mind it gives was a good investment!
Would you recommend this? Yes, I would recommend to a friend
5
Mr.D
I have been waiting for Forster to come out with this product for a long time. This is a great product from a great company and Forster is number one in go- no go gauges.
Customer Questions
0 Questions