My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Reloading Measuring Tools Case Gauges & Headspace Tools EGW 5.56X45MM NATO 7-HOLE CARTRIDGE CHECKER Support

Ensure reliable performance with EGW 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs, preventing jams and misfires.
-10 %

EGW 5.56X45MM NATO 7-HOLE CARTRIDGE CHECKER

841370107735 296000191
Variations
Filters:
Variations:

Variations:

-10 %
Ensure reliable performance with EGW 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs, preventing jams and misfires.
5.56X45MM NATO 7-HOLE CARTRIDGE CHECKER
35.9 GBP 3 £35.90 * £39.90 You save £4.00
In stock
Cartridge: 5.56 mm NATO Product no.: 296000191
In stock
35.9 GBP 3 £35.90 * £39.90
-10 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.223 REMINGTON 7-HOLE CARTRIDGE CHECKER
36.9 GBP 4 £36.90 * £40.90 You save £4.00
In stock
Cartridge: 223 Remington Product no.: 296000190
In stock
36.9 GBP 4 £36.90 * £40.90
-6 %
Ensure reliable performance with EGW's 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.308 WIN 7-HOLE CARTRIDGE CHECKER
46.9 GBP 5 £46.90 * £49.90 You save £3.00
In stock
Cartridge: 308 Winchester Product no.: 296000222
In stock
46.9 GBP 5 £46.90 * £49.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from aircraft-grade aluminum to verify ammo specs and prevent jams and misfires.
10MM AUTO 7-HOLE CARTRIDGE CHECKER
29.9 GBP 4 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 10 mm Auto Product no.: 296000223
In stock
29.9 GBP 4 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.40 S&W 7-HOLE CARTRIDGE CHECKER
29.9 GBP 1 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 40 S&W Product no.: 296000225
In stock
29.9 GBP 1 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum, verifying ammo specs to prevent jams and misfires.
.38 SUPER 7-HOLE CARTRIDGE CHECKER
29.9 GBP 3 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 38 Super Product no.: 296000226
In stock
29.9 GBP 3 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.45 ACP 7-HOLE CARTRIDGE CHECKER
29.9 GBP 1 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 45 Auto (ACP) Product no.: 296000227
In stock
29.9 GBP 1 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
9MM LUGER 7-HOLE CARTRIDGE CHECKER
29.9 GBP 4 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 9 mm Luger Product no.: 296000252
In stock
29.9 GBP 4 £29.90 * £32.90
-10 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.300 BLACKOUT 7-HOLE CARTRIDGE CHECKER
38.6 GBP 0 £38.60 * £42.90 You save £4.30
Backorderable
Cartridge: 300 AAC Blackout Product no.: 296000221
Backorderable
38.6 GBP 0 £38.60 * £42.90
Ensure your .357 Magnum ammo is within spec with EGW's 7-Hole Chamber Checkers, made from 6061 T6 aluminum for reliable performance and accuracy.
.357 MAGNUM 7-HOLE CARTRIDGE CHECKER
35.9 GBP 0 £35.90 *
Backorderable
Cartridge: 357 Magnum Product no.: 296000224
Backorderable
35.9 GBP 0 £35.90 *
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.380 AUTO 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 380 Auto (ACP) Product no.: 296000202
Not available
26.52 GBP 0 £26.52 *
Ensure your .30-06 ammo is within SPEC with EGW's 7-Hole Chamber Checkers, crafted from durable 6061 T6 aluminum to prevent jams and malfunctions.
.30-06 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 30-06 Springfield Product no.: 296000220
Not available
55.26 GBP 0 £55.26 *
Ensure reliable performance with EGW's 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
44 MAGNUM 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 44 Magnum Product no.: 296000268
Not available
31.29 GBP 0 £31.29 *
29.9 46.9 13 GBP
-10 %
MSRP £39.90
35.9 GBP £35.90 You save £4.00

Prices inclusive of duty & VAT.

Product no.: 296000191

Mfr. No.: 70160

841370107735 Chamber Checkers help you avoid jams, misfires, feeding problems, and other malfunctions caused by out-of-spec ammo. Use with factory loaded ammunition as well as reloaded ammo prior to shooting to verify your ammunition is within SPEC. These 7-Hole checkers are machined from solid 6061 T6 aircraft grade aluminum and uses actual Clymer reamers to ensure the ammo matches your chamber. Measures minimum case diameter as well as maximum overall length. Anodized Matte Black.
In stock 3 pcs. in the USA warehouse
4/5 - 4 Customers
1
2
3
4
5
6
7
8
9
10+
-10 %
MSRP £39.90
You save £4.00
£35.90

Prices inclusive of duty & VAT.

You save £4.00
1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Delivery time approx. 7-14 days.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
Wish List Ask question
29.9 46.9 13 GBP
Description Specification Customers reviews Accessories

EGW 5.56X45MM NATO 7-HOLE CARTRIDGE CHECKER

-10 %
MSRP £39.90
35.9 GBP £35.90 You save £4.00

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
-10 %
MSRP £39.90
You save £4.00
£35.90

Prices inclusive of duty & VAT.

You save £4.00
1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Description:

Ensure your ammunition is always within spec with our 7-Hole Chamber Checkers!

The 7-HOLE CHAMBER CHECKERS from EGW are essential tools for any firearms enthusiast. Designed to help you avoid jams, misfires, feeding problems, and other malfunctions caused by out-of-spec ammo, these checkers are perfect for both factory loaded and reloaded ammunition.

Key Features:

  • Precision Machined: Made from solid 6061 T6 aircraft grade aluminum.
  • Compatibility: Uses actual Clymer reamers to ensure your ammo matches your chamber.
  • Measurements: Accurately measures minimum case diameter and maximum overall length.
  • Finish: Anodized Matte Black for durability and a sleek look.

Before heading to the range, use these 7-Hole checkers to verify that your ammunition is within SPEC. It's a simple step that can save you from potential issues while shooting.



Top takeaways

  1. EGW 5.56x45mm NATO 7-Hole Cartridge Checker helps prevent firearm malfunctions by verifying that factory and reloaded ammunition are within specification.
  2. Made from 6061 T6 aircraft grade aluminum and uses Clymer reamers for precise measurement of minimum case diameter and maximum overall length.
  3. Anodized in Matte Black, these checkers are a part of the Case Gauges & Headspace Tools category, essential for shooters who prioritize safety and reliability.

Attributes

  • Cartridge: 
    5.56 mm NATO
  • Delivery weight: 0.295kg
  • Shipping height: 33mm
  • Shipping width: 69mm
  • Shipping length: 89mm
  • UPC: 841370107735

Item details

Made in USA

Customers reviews

Customer ratings (4)

4 / 5
Not recommended

Brownells USA Not trustworthy 30/04/2018

The bullets pass well in the caliber (EGW) but do not enter the barrel of the revolver (Taurus 357).

Definitely recommended

Brownells USA One Arm shooter approved !!!! 10/01/2018

My EGW 223 bullet checker just came in today from Brownells. I have one arm and I never reload. My friends do some reloading for me sometimes. I bought two EGW bullets checkers and 4 LE Wilson max gauges to play with my ammo. I have a full case of 223 55grain Fiocchi (50 round) ammo. The first box , I found one round that would not sit flat. I am going to check my ammo before shooting for the rest of my life. I will be buying more ammo checkers in the furure. Real fun to play with , when the weather is bad outside.

Variations:

-10 %
Ensure reliable performance with EGW 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs, preventing jams and misfires.
5.56X45MM NATO 7-HOLE CARTRIDGE CHECKER
35.9 GBP 3 £35.90 * £39.90 You save £4.00
In stock
Cartridge: 5.56 mm NATO Product no.: 296000191
In stock
35.9 GBP 3 £35.90 * £39.90
-10 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.223 REMINGTON 7-HOLE CARTRIDGE CHECKER
36.9 GBP 4 £36.90 * £40.90 You save £4.00
In stock
Cartridge: 223 Remington Product no.: 296000190
In stock
36.9 GBP 4 £36.90 * £40.90
-6 %
Ensure reliable performance with EGW's 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.308 WIN 7-HOLE CARTRIDGE CHECKER
46.9 GBP 5 £46.90 * £49.90 You save £3.00
In stock
Cartridge: 308 Winchester Product no.: 296000222
In stock
46.9 GBP 5 £46.90 * £49.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from aircraft-grade aluminum to verify ammo specs and prevent jams and misfires.
10MM AUTO 7-HOLE CARTRIDGE CHECKER
29.9 GBP 4 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 10 mm Auto Product no.: 296000223
In stock
29.9 GBP 4 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.40 S&W 7-HOLE CARTRIDGE CHECKER
29.9 GBP 1 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 40 S&W Product no.: 296000225
In stock
29.9 GBP 1 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum, verifying ammo specs to prevent jams and misfires.
.38 SUPER 7-HOLE CARTRIDGE CHECKER
29.9 GBP 3 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 38 Super Product no.: 296000226
In stock
29.9 GBP 3 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.45 ACP 7-HOLE CARTRIDGE CHECKER
29.9 GBP 1 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 45 Auto (ACP) Product no.: 296000227
In stock
29.9 GBP 1 £29.90 * £32.90
-9 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
9MM LUGER 7-HOLE CARTRIDGE CHECKER
29.9 GBP 4 £29.90 * £32.90 You save £3.00
In stock
Cartridge: 9 mm Luger Product no.: 296000252
In stock
29.9 GBP 4 £29.90 * £32.90
-10 %
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
.300 BLACKOUT 7-HOLE CARTRIDGE CHECKER
38.6 GBP 0 £38.60 * £42.90 You save £4.30
Backorderable
Cartridge: 300 AAC Blackout Product no.: 296000221
Backorderable
38.6 GBP 0 £38.60 * £42.90
Ensure your .357 Magnum ammo is within spec with EGW's 7-Hole Chamber Checkers, made from 6061 T6 aluminum for reliable performance and accuracy.
.357 MAGNUM 7-HOLE CARTRIDGE CHECKER
35.9 GBP 0 £35.90 *
Backorderable
Cartridge: 357 Magnum Product no.: 296000224
Backorderable
35.9 GBP 0 £35.90 *
Ensure reliable performance with the EGW 7-Hole Chamber Checker, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams and misfires.
.380 AUTO 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 380 Auto (ACP) Product no.: 296000202
Not available
26.52 GBP 0 £26.52 *
Ensure your .30-06 ammo is within SPEC with EGW's 7-Hole Chamber Checkers, crafted from durable 6061 T6 aluminum to prevent jams and malfunctions.
.30-06 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 30-06 Springfield Product no.: 296000220
Not available
55.26 GBP 0 £55.26 *
Ensure reliable performance with EGW's 7-Hole Chamber Checkers, crafted from 6061 T6 aluminum to verify ammo specs and prevent jams or misfires.
44 MAGNUM 7-HOLE CARTRIDGE CHECKER
Not available
Cartridge: 44 Magnum Product no.: 296000268
Not available
31.29 GBP 0 £31.29 *

Customers also bought

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2026 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top