1911 Mainspring Housing Aluminum KIT Officer's ultra size 1911 frame parts

1911 Checkered Mainspring Housing

1911 Mainspring Housing Steel Arched

Rock Island/Armscor 1911 Full and Mid Size Mainspring Housing Kit NEW! # 58062

Kimber 1911 OEM Main Spring Housing for Compact & Ultra 1000020A

1911 Rear Sight Steel

Rock Island Armory 1911 Steel Serrated Mainspring Housing Full-Size / Commander

Kimber OEM 1911 Main Spring Housing Compact Silver 1000171A MainSpring Used