Which company manufactured the windows?  I would call their regional rep and get a recommendation 

AI says this about your photo. 

 Disclaimer: it may be totally wrong information.  Your HOA probably knows what the window manufacturer is.

The hardware components shown resting on the window sill belong to Amesbury Truth (formerly known as Truth Hardware).

Overview of the Parts Shown:

1. The Detached Arm / Forked Bracket (Left): This is the sash link / guide bracket (often paired with a stud bracket or slider track) that attaches to the bottom of the window sash.
2. The Drive Gear / Base Track (Right): This is the operator housing and worm gear mechanism for a dual-arm or split-arm casement operator (specifically from Truth’s EntryGard or Maxim/Encore series).

Common Window Brands Using This Hardware:

Amesbury Truth does not manufacture full window units; instead, they supply operator mechanisms, hinges, and locks to major window manufacturers. In Colorado mountain developments—including the townhomes in Keystone—this specific Truth hardware setup is most commonly used by:

• Marvin Windows & Doors (specifically classic Marvin Wood/Clad Casements and Integrity series)
• JELD-WEN / Caradco
• Hurd (Wood/Clad casements)
• Pella or Andersen (certain custom or retrofitted casement product lines)

Ordering Replacement Parts

If you are looking to replace or reattach these components:

• Check the metal castings on the underside or edge of the housing—Truth almost always stamps an 8-digit or 5-digit part number (e.g., 45251, 30842, or 40754) directly onto the metal body.
• Replacement operators and link arms compatible with these stamps can be sourced through hardware specialty suppliers like SWISCO, Direct Window Parts, or TruthParts.