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1911 AUTO MAINSPRING HOUSING REBUILD KIT Reviews & Ratings

1911 AUTO MAINSPRING HOUSING REBUILD KIT

Handy kit contains all the parts you need to mount a new mainspring housing on your 1911, or reburish the internal components to factory-new condition. Includes standard, factory weight (23 lb.) hammer spring to help ensure positive ignition and restore your pistol’s reliability by replacing an old, weak spring. Also includes mainspring cap, cap pin, and retaining pin, so you don’t ruin a good-looking new housing’s appearance with old, dinged hardware. Kit available with blued or stainless external components to match your pistol’s finish. Installation instructions included.

SPECIFICATIONS:

Material: Steel or Stainless
Finish: Blued or Natural
Kit Includes:
- Factory Weight Hammer Spring
- Mainspring Cap
- Cap Pim
- Mainspring Housing Retainer Pin
- Instructions
Fits full size 1911 Government and Commander

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1 Stars

Reviews Summary

Customers are overwhelmingly satisfied with the 1911 AUTO MAINSPRING HOUSING REBUILD KIT, praising its quality, easy installation, and comprehensive parts inclusion. Many highlight the performance improvements and value of the kit. A few reviewers noted minor concerns regarding stiffness of springs and the lack of a housing pin, but these do not detract significantly from the positive feedback overall.

What Reviewers Are Saying

Product Quality

65%

Reviewers consistently commend the high quality of the kit, noting that the parts are well-made, durable, and fit perfectly within their firearms. The inclusion of recognizable brands like Wolff springs further enhances their confidence in the product.

Ease of Installation

60%

Many customers express a positive experience with the installation process, describing it as straightforward and manageable with common tools. While some mention needing assistance for specific steps, the overall sentiment is that the kit is user-friendly.

Value for Money

55%

Numerous reviewers highlight that the kit offers excellent value, being cheaper when purchased as a set than sourcing each part individually. This aspect makes it a recommended buy for those looking to upgrade or maintain their 1911s.

Performance Improvement

50%

Several buyers report noticeable improvements in their firearms' performance after using the rebuild kit, particularly in trigger pull and operation, which enhances their overall shooting experience.

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Great little rebuild kit

Awsome little kit that has everything for a rebuild or mainspring build

Would you recommend this? Yes, I would recommend to a friend

by DAVID I. on July 31, 2026

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Was this review helpful? 1

Great and simple!

Great and simple products, Well made parts fit perfectly Love the Wolff springs

Would you recommend this? Yes, I would recommend to a friend

by DANIEL W. on May 03, 2026

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Was this review helpful? 1

Great and simple

Parts are durable and well made! And wolff springs are alway great

Would you recommend this? Yes, I would recommend to a friend

by DANIEL W. on May 03, 2026

Verified Purchase

Was this review helpful? 1

1911 MainSpring Housing Kit

Well made kit.I brought this for having a spare parts on hand when needed.

Would you recommend this? Yes, I would recommend to a friend

by WILLIAM J. on July 31, 2024

Verified Purchase

Was this review helpful? 1

Just what I needed

Just what I needed to build up a second mainspring housing. I like keeping the OEM parts alone so I ordered another housing and needed this kit. It was an easy install. I replaced the mainspring with an 18 pounder. Other than that there were no surprises.

Mainspring Housing Rebuild Kit

Replacing the mainspring and parts in my Springfield 1911A1. Appears to be very well made.

works great

easy installation no increase in trigger weight

All the parts you may lose

A nice kit to rebuild or replace lost parts of the 1911 Main Spring Housing. I had to build a lanyard loop housing for my Walther Colt 22LR 1911. Rail Gun and this kit has all the parts

1911 Mainspring Housing rebuild kit

I recently purchased three of the SS spring sets for my SA 1911-A1 in 9mm and 45 ACP plus my older Ruger 1911 45 ACP. I installed the spring kits in new Ed Brown arched mainspring housings. The ones with the vertical grooves. What a difference. The arched grip feels so much more comfortable over a flat housing design. Plus the bottom of the frame / grip no longer digs into the palm of my hand. I was contemplating doing a "Bobtail" on each of my pistols but this was a much easier and cheaper solution with great results. The spring kit is everything you need to rebuild a mainspring housing. As a kit the overall price is cheaper than purchasing each component on their own. Good product and a great price. Thanks Brownells.

SUPERB Quality

I used this mainspring build kit to build up a Ruger flat mainspring housing. I have to say I was much more than just pleased by the parts that were included. Everything fit perfectly and effortlessly into the MS housing and works great. While the pins are all high quality and came in Brownells labeled bags, the mainspring itself is (at least in my kit and another reviewers) a Wolf spring.