Side view of the folding stock adapter set installed on an Aero Solus chassis

How to Install the Aero Solus Folding Stock Adapter Set (Magpul Hinge)

The Rokin Precision Solus Chassis Folding Stock Adapter Set lets you run a side-folding stock on a Solus Competition chassis, including Aero Precision Solus models, using a Magpul folding stock hinge (MAG999, sold separately). Here is the full install, straight from our product instructions.

What you need

  • Rokin Solus Chassis Folding Stock Adapter Set (2 adapters, 4 fasteners)
  • Magpul folding stock hinge, part number MAG999 (not included)
  • 3/16 in. Allen key
  • 5/32 in. Allen key
  • Inch-pound torque wrench

Before you start

  • Adapters and fasteners may have machining oil on them. Wipe them clean before installing.
  • The hinge can be installed to fold left or right. Folding to the right clears the standard stock and the bolt handle with the bolt closed; stock modifications may change that.
  • Aftermarket stock weights will prevent the stock from folding fully.

Installation

  1. Remove the stock spacer using a 3/16 Allen key.
  2. Install the Solus-to-hinge adapters on the chassis and on the stock. Torque to 60 ± 5 in-lb.
  3. Lower the hinge onto the adapters from the top.
  4. Install the 4 fasteners into the hinge using a 5/32 Allen key. Torque to 60 ± 5 in-lb.
  5. Enjoy your folding stock.

Related

Rokin Precision is not affiliated with Aero Precision or Magpul. Brand names are used for fitment reference only.

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