Rokstok Mini Chassis

RepeatPete

Lil-Rokslider
Joined
Aug 13, 2023
Messages
239
Thought I’d share another stock project. I wanted to significantly up my shooting this year and focus on practice and not gear, especially taking all summer to make custom carbon fiber stocks like I have the last few years. So to accomplish this, I bought more gear…

There was a Howa 1500 in 6 cm at my LGS that had stayed on the used shelf for over two years just staring at me every time I went in. So for a bargain of $300 I finally broke and bought it. Then a used rokstok from the classifieds for a great deal as it was a left handed R700 SA. To marry the two, I picked up a universal mini chassis from Grayboe, inlet for the Howa.

I didn’t take a ton of pictures and document everything, but the process was simple:
  • Trim the mini chassis to reduce weight and lessen the amount of carbon I have to take out of the stock
  • layout where the mini chassis will land based on trigger reach - a touch longer than the standard rokstok felt more comfortable, so I ended up at around 1.8”
  • measure the mini chassis with calipers and use a router to carefully cut a big rectangle in the stock.
  • Bond it in with MarineTex.
  • Drill through the thicker sections of the mini chassis and epoxy in carbon fiber rods to serve as cross bolts. I used 4 on this one, two 5mm rods and two larger tubes.
  • Fill the gaps and previous R700 inletting with either MarineTex, epoxy, or epoxy putty and sand smooth.
  • I also discovered the hard way that the Howa models only come from Grayboe with the long, tactical-style lever so I cut it down to even with the trigger guard and checkered for grip.
  • Then wet sand to 400 and my first sponge paint job with some basic krylon followed by a few coats of flat clear.
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Wow, nice work! What does the finished stock and bottom metal weigh now?

I’ll have to double check, but I believe it’s around 40-41 oz. Heavy, but when researching I saw someone quote a tikka rokstock with flush cups, rail, and factory bottom metal at 38 oz, so I’m not far off.
 
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