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Special Shipping Requirements

Many rocketry products require special shipping.
Engines require HAZ-MAT shipping See our SHIPPING area before placing an order to avoid delays and further charges.
Any products with HAZ in the description require shipping regulated by the federal government. Other products like fin stock and body tubes may also require special boxes. Please see our SHIPPING listings to learn more before placing an order.

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Commonwealth Rocketry, LLC.

47887 Michigan Ave. Suite 207
Canton, Michigan 48188
734-722-Rocket (7625)
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Home » Additional Products » Model Rocketry Lugs, Buttons, Rails and Rods


List Price: $4.99
Price: $3.99


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PMR (Perfect Motor Retention)
For 29mm Hobby Reload Motors

Never Loose Your Aerotech RMS29 Motor Again!

The PMR will fit the Rouse Tech 29mm motor pictured here and it will also fit the Aerotech RMS29 40/120 reload systemThe PMR system HOLDS your reload motor in place.

The PMR system shown fits a Aerotech
or Rouse Tech 29mm Reload Motors.

It will even hold your regular 29mm rocket motors.

How Does It Work?

Drill 2 holes in your aft motor mount ring.
Thread in insert nuts found in our hardware area and epoxy into place.

Load up your RMS or any motor and then slip the PMR retainer
over top and fasten with 4-40 screws found in our hardware area.
PMR29a.jpg - 165389 Bytes

Your are purchasing: One Laser Cut PMR Retainer

Due to humidity and diferences in wood you may need to slightly sand the PMR dervice for a perfect fit. Laser cut products have blackened edges due to the LASER cuttting process. Sanding or coating with epoxy is advised.
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