Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Solid Steel, Serrated, OEM-Style Replacement Housings

An exact reproduction of the original factory mainspring housing, complete with vertical serrations that help improve grip but won't grab clothing. Finish-machined from a solid-steel casting; excellent for restoring or building any 1911.


1911, Issue:11, Page:022
Big Book Catalog, Issue:68, Page:121
Sinclair, Issue:1A, Page:021
SPECS: Blued (BL) or stainless steel (SS), flat (FL) or arched (AR). Fits Govt./Commander (GM) and Officers ACP (OM).

JOHN MASEN - 1911 AUTO SERRATED MAINSPRING HOUSING

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3 Item(s)
4548FB BLUE FLAT MSH
555-101-001WB
BL/FL GM Mainspring Housing
555101001BL/FL GM Mainspring Housing

Mfr Part: 4548FB

$18.99

In Stock

Finish: Blued

4548AB BLUE ARCHED MSH
555-101-002WB
BL/AR GM Mainspring Housing
555101002BL/AR GM Mainspring Housing

Mfr Part: 4548AB

$17.99

In Stock

Finish: Blued

4548ASS STAINLESS ARCHED MSH
555-101-004WB
SS/AR GM Mainspring Housing
555101004SS/AR GM Mainspring Housing

Mfr Part: 4548AS

$17.99

In Stock

Finish: Stainless Steel

1911 AUTO SERRATED MAINSPRING HOUSING