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)
Shopping 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

Gunsmith Tools Metal Prep & Coloring Stones BROWNELLS INDIA STONE, SILVERSMITH, MF-414 Support
Enhance your Colt's performance with the MF-414 stoning kit, designed to reduce cocking effort and lighten trigger pull without altering critical notches.

BROWNELLS INDIA STONE, SILVERSMITH, MF-414

050806023352 657414002
Variations
Filters:
Variations:
Enhance your Colt's performance with the MF-414 stoning kit, designed to reduce cocking effort and lighten trigger pull without altering critical notches.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SILVERSMITH, MF-414
34.9 GBP 4 £34.90 *
In stock 4 pcs. in the USA warehouse
Model Number: MF-414 Style: India Product no.: 657414002
In stock 4 pcs. in the USA warehouse
34.9 GBP 4 £34.90 *
Ask question
Achieve a smoother action on your Colt Single Action Army with the Brownells Stoning Kit, featuring three precision stones for optimal performance.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SQUARE, MEDIUM MF-14
19.9 GBP 2 £19.90 *
In stock 2 pcs. in the USA warehouse
Model Number: MF-14 Style: India Product no.: 657214141
In stock 2 pcs. in the USA warehouse
19.9 GBP 2 £19.90 *
Ask question
Achieve the lightest pull with the Brownells Colt Single Action Hand Slot Stoning Kit, featuring three precision stones for smooth, hard-to-reach areas.
COLT SINGLE ACTION HAND SLOT STONING KIT - HAND SLOT STONING KIT, COLT SINGLE ACTION
119.9 GBP 0 £119.90 *
Backorderable
Model Number: Colt SA Hand Stoning Kit Product no.: 080904000
Backorderable
119.9 GBP 0 £119.90 *
Ask question

Variations:

Enhance your Colt's performance with the MF-414 stoning kit, designed to reduce cocking effort and lighten trigger pull without altering critical notches.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SILVERSMITH, MF-414
34.9 GBP 4 £34.90 *
In stock 4 pcs. in the USA warehouse
Model Number: MF-414 Style: India Product no.: 657414002
In stock 4 pcs. in the USA warehouse
34.9 GBP 4 £34.90 *
Ask question
Achieve a smoother action on your Colt Single Action Army with the Brownells Stoning Kit, featuring three precision stones for optimal performance.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SQUARE, MEDIUM MF-14
19.9 GBP 2 £19.90 *
In stock 2 pcs. in the USA warehouse
Model Number: MF-14 Style: India Product no.: 657214141
In stock 2 pcs. in the USA warehouse
19.9 GBP 2 £19.90 *
Ask question
Achieve the lightest pull with the Brownells Colt Single Action Hand Slot Stoning Kit, featuring three precision stones for smooth, hard-to-reach areas.
COLT SINGLE ACTION HAND SLOT STONING KIT - HAND SLOT STONING KIT, COLT SINGLE ACTION
119.9 GBP 0 £119.90 *
Backorderable
Model Number: Colt SA Hand Stoning Kit Product no.: 080904000
Backorderable
119.9 GBP 0 £119.90 *
Ask question
19.9 119.9 3 GBP
34.9 GBP £34.90

Prices inclusive of duty & VAT.

Product no.: 657414002

Mfr. No.: 61463686855

050806023352 You can't get a great action job with out cleaning up every bit of roughness inside the Single Action Army's frame. You'll be amazed at how much you can reduce the single action's cocking effort and lighten perceived trigger pull without ever touching the critical trigger/hammer notches. Well worth the effort on first and second generation Colts, especially important on 3rd generation and clones with cast or roughly forged frames. The MF-414 stone fits nicely in the hand slot and cuts quickly to get rid of casting roughness. Follow with the HF-823 to make a slick, polished path for the hand. Use the MF-14 to round the nose of the hammer notch. Thanks to Eddie Janis of Peacemaker Specialists for his help with this kit.
In stock 4 pcs. in the USA warehouse
5/5 - 1 Customers
1
2
3
4
5
6
7
8
9
10+
£34.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Free shipping starting at £199.00.
Delivery time approx. 7-14 days.

100-Day Return Policy
  • Reduces cocking effort
  • Lightens trigger pull
  • Fits perfectly in hand
Wish List Ask question

Description:

Smooth Those Hard-To-Reach Spots For Lightest Pull

You can't get a great action job without cleaning up every bit of roughness inside the Single Action Army's frame. You'll be amazed at how much you can reduce the single action's cocking effort and lighten perceived trigger pull without ever touching the critical trigger/hammer notches.

Well worth the effort on first and second generation Colts, especially important on 3rd generation and clones with cast or roughly forged frames. The MF-414 stone fits nicely in the hand slot and cuts quickly to get rid of casting roughness. Follow with the HF-823 to make a slick, polished path for the hand. Use the MF-14 to round the nose of the hammer notch.

Thanks to Eddie Janis of Peacemaker Specialists for his help with this kit.

Specifications:

  • Kit contains three stones in padded plastic box: MF-414, MF-14 and HF-823.
  • Dimensions are approximate and may vary.
  • MF-414 - medium India, 5/16" (7.9mm) wide x 3/16" (4.8mm) thick, tapers to 1/16" (1.6mm) thick x 4" (10cm) long;
  • MF-14 - medium India ¼" (6.3mm) square x 4" long.
  • HF-823 - hard Arkansas 3/8" (9.5mm) wide x 1/8" (3.2mm) thick x 3-1/8" (7.9cm) long.


Attributes

  • Model Number: MF-414
  • Style: India
  • Delivery weight: 0.009kg
  • Shipping height: 1mm
  • Shipping width: 83mm
  • Shipping length: 146mm
  • UPC: 050806023352

Customers reviews

Customer ratings (1)

5 / 5
Definitely recommended

Brownells USA Great Stoning kit 26/05/2017

This Kit works great on several single actions. Cartridge and Cap and Ball revolvers.

Variations:

Enhance your Colt's performance with the MF-414 stoning kit, designed to reduce cocking effort and lighten trigger pull without altering critical notches.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SILVERSMITH, MF-414
34.9 GBP 4 £34.90 *
In stock 4 pcs. in the USA warehouse
Model Number: MF-414 Style: India Product no.: 657414002
In stock 4 pcs. in the USA warehouse
34.9 GBP 4 £34.90 *
Ask question
Achieve a smoother action on your Colt Single Action Army with the Brownells Stoning Kit, featuring three precision stones for optimal performance.
COLT SINGLE ACTION HAND SLOT STONING KIT - INDIA STONE, SQUARE, MEDIUM MF-14
19.9 GBP 2 £19.90 *
In stock 2 pcs. in the USA warehouse
Model Number: MF-14 Style: India Product no.: 657214141
In stock 2 pcs. in the USA warehouse
19.9 GBP 2 £19.90 *
Ask question
Achieve the lightest pull with the Brownells Colt Single Action Hand Slot Stoning Kit, featuring three precision stones for smooth, hard-to-reach areas.
COLT SINGLE ACTION HAND SLOT STONING KIT - HAND SLOT STONING KIT, COLT SINGLE ACTION
119.9 GBP 0 £119.90 *
Backorderable
Model Number: Colt SA Hand Stoning Kit Product no.: 080904000
Backorderable
119.9 GBP 0 £119.90 *
Ask question

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.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top