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Brownells

1911 Mainspring Cap - Mainspring Cap For 1911, Blued, 6 Pack

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Mainspring Cap

For 1911 auto pistols

Six-pack Quantity

For multiple replacements

U.s.-made Part

From Brownells

All Parts

Are carbon steel

Blued Finish

Indicated by (B)

$6.49
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SKU: 100000876

Overview

This mainspring cap is a replacement part for the 1911 auto pistol, intended for builders, armorers, and shooters maintaining a proper factory-style fit. It is offered as a 6-pack and is made in the U.S. from carbon steel with a blued finish. The part is described as fitting and functioning like the factory component, making it a practical choice for routine repair or parts inventory.

Why Hunters Choose the Brownells

U.s.-made Parts

For the 1911 auto pistol

Guaranteed Fit

Function like the factory part

Fits 1911

Auto platforms

Carbon Steel

Construction

Blued Finish

Indicated by the product specs

Key Features

  • Mainspring cap for 1911 auto pistols
  • Six-pack quantity for multiple replacements
  • U.S.-made part from Brownells
  • All parts are carbon steel
  • Blued finish indicated by (B)
  • Designed to fit and function like the factory part

Best Used For

  • 1911 owners replacing worn mainspring caps in a standard 1911 Auto pistol
  • Gunsmiths or hobbyists keeping a small supply of factory-style replacement parts on hand
  • Shooters needing U.S.-made carbon steel parts with a blued finish for 1911 maintenance
  • Users seeking a six-pack for multiple repairs, shop inventory, or future service needs

Specifications

Blade FinishBlued
Country Of OriginU.S.-Made
Fits1911 Auto
MaterialCarbon steel
Part TypeMainspring Cap
Quantity6 Pack

Pros

  • U.S.-made parts for the 1911 auto pistol
  • Guaranteed to fit and function like the factory part
  • Fits 1911 Auto platforms
  • Carbon steel construction
  • Blued finish indicated by the product specs
  • Six-pack quantity offers multiple replacement parts

Considerations & Trade-offs

  • This is a small replacement-part pack, so it is intended for maintenance or repair rather than a complete pistol build or upgrade.
  • The blued finish is identified by the '(B)' designation, so appearance may differ from other 1911 parts already on the pistol.
  • The fit note is limited to 1911 Auto pistols; compatibility should be confirmed against the specific 1911 variant before ordering.
  • All parts are carbon steel, which may matter when matching existing components or planning a full parts set.

Suggested Comparisons

  • 1911 small parts kits
  • 1911 replacement springs
  • 1911 frame and internal parts
  • 1911 maintenance and repair parts

Suggested Accessories

  • Pistol cleaning kit
  • Gun oil
  • Replacement springs
  • Armorer's tools

Frequently Asked Questions

What firearm does this mainspring cap fit?

It is listed as fitting the 1911 Auto pistol.

How many mainspring caps are included?

This product is a 6 pack.

What finish does this part have?

The product title identifies it as blued, and the specs note that (B) indicates a blued finish.

What material is listed for this part?

The specs state that all parts are carbon steel.

Is this part made in the U.S.?

Yes. The short description says these are U.S.-made parts, and the long description also states that each part is U.S.-made.