UM RokStok + metal bottom metal issue - probably user error

[HandgunHTR]

@fwafwow, I had a similar issue with one of my bottom metals (it may have been an Oregon Mountain) on a recent build with a Manners stock. It was contacting the trigger exactly where you show the worn cerakote in your picture. Essentially, when it was tightened down it was locking the trigger in place. As it was a perfect fit in regards to not being sunken or proud and the mags fit just fine, I didn't want to shim it, so I just beveled that edge with a jewelers file until I got the clearance I needed. Hit it with a sharpie to cover up the bare metal and it works perfectly now.
I would almost guarantee that a shim or two will fix your issue.

 

[fwafwow]

Update - Thomas has been in touch a few times. He not only gave me a refund, he wants me to keep the bottom metal. I explained that I thought that was not the right outcome, as I didn’t say I was going to use it for an after market stock, and since I still have the OEM stock, it would work with that. He wouldn’t budge. A class act.

Then he called and said he thinks he has a solution. He’s sending me one of the below (in orange!) It was made for the KRG Midas Trigger, so he thinks it may be the solution to the problem. At least the trigger part. I’m going to test it, along with the one I purchased (with more shims) after I get the KRG model, which should be in a week or so. I will report back.

 

[atmat]

Update - Thomas has been in touch a few times. He not only gave me a refund, he wants me to keep the bottom metal. I explained that I thought that was not the right outcome, as I didn’t say I was going to use it for an after market stock, and since I still have the OEM stock, it would work with that. He wouldn’t budge. A class act.

Then he called and said he thinks he has a solution. He’s sending me one of the below (in orange!) It was made for the KRG Midas Trigger, so he thinks it may be the solution to the problem. At least the trigger part. I’m going to test it, along with the one I purchased (with more shims) after I get the KRG model, which should be in a week or so. I will report back. View attachment 778402

For anyone reading, that is customer service.

I’ll consider buying these now just to support someone like that.

 

[JollyRoger]

I’ve been super happy with my KRG trigger and his bottom metal. Fits perfect in the Rokstok for me

 

[WW2 Buff]

Oregon Mountain Rifle bottom metal fits flawless in my factory stock but not my Rokstok. Fit is too tight causing the magazine to bind and not snap in place. I did resolve the issue by grinding the bottom metal locally in two separate areas to relieve the tight fit. As stated before the factory plastic fits great in the Rokstok I just don’t like the cheap appearance.

 

[pods8 (Rugged Stitching)]

Here’s those washers:

View attachment 778266

I just got my rokstok and was test fitting the bottom metal in using some washers and noticed the bottom metal was puckering in the middle when tightened but laid perfectly flat in the inlet without screws yet. Looking closer the front hole isn't exactly centered up with the circle in the plastic (which the washer fits snuggly into) so the hole ends up off center a little. Without the washers it all goes together fine. Long story short these washers (without some modification) might not necessarily work depending on how things align.

 

[BBarnett13]

@fwafwow - Any update regarding the High Desert KRG Midas Trigger bottom metal fit in the RokStok?

 

[fwafwow]

@fwafwow - Any update regarding the High Desert KRG Midas Trigger bottom metal fit in the RokStok?

I have not yet received it. I will let you know when I have it.

 

[gulfofmexicoflyfishing]

Anyone in this thread have feeding issues using tikka sporter mags in the HD bottom metal?

I had a hell of a time getting mine to run in a stocky’s vg2. I tried every combination of provided shims possible, different torque specs, and ended up actually modifying the inlet on my stock, moving to thicker stainless shims, and modifying the catch on a tikka mag before it would run. I also experienced some of the trigger and safety jamming issues mentioned in this thread while I was working through the different combinations of shims.

The mag (new tikka m+ sporter) sits very low in the bottom metal when it is latched, in addition to having what I would consider excessive side to side play. The bolt will slide over the top without picking up a cartridge most of the time. If I apply upward pressure to the mag with my hand while cycling the bolt it will run fine but that it obviously not ideal. I extended the catch lip on the front of the magazine about 1/16” using high strength epoxy in order to suck the mag up higher into the bottom metal. This has allowed the rifle to run reliably like it did as a factory rifle but it still has more side to side play than I would like to see.

In hindsight I probably should have tried a different bottom metal before modifying the inlet but I was a victim of my own hard headedness and here we are. Aside from that, I really appreciate the quality machining of the bottom metal and the ability to torque my action to 60 inch/lbs vs the factory tikka plastic versions. Something about plastic just doesn’t jive with me.

Standing by to hopefully learn what I could have done differently!

 

[The Harbor Master]

I would recommend using factory bottom plastic with RokStok and Stockys VG2.

Are you still doing the 65 ft lbs UM shows recommended with the rokstock, even with the plastic factory Tikka bottom?

 

[mxgsfmdpx]

Are you still doing the 65 ft lbs UM shows recommended with the rokstock, even with the plastic factory Tikka bottom?

50-55 with factory. 60-65 with High Desert metal.

 

[The Harbor Master]

50-55 with factory. 60-65 with High Desert metal.

Thanks... after asking I saw further posts discussing the washers etc. Glad to hear I can stick with factory bottom plastic... if I HAD to change, I would. But another $200 would be hard to justify, for my limited wallet anyway.

 

[fwafwow]

I received late last week the replacement BM from High Desert. I have not yet had a chance to swap it for the OEM plastic. It's still hunting season and I'm thinking I will wait until later to make the switch, as I will want to be able to take it to the range after.

 

[B_Reynolds_AK]

I received late last week the replacement BM from High Desert. I have not yet had a chance to swap it for the OEM plastic. It's still hunting season and I'm thinking I will wait until later to make the switch, as I will want to be able to take it to the range after.

Update on that now? Considering the KRG Bottom Metal for my new Rokstok.

 

[swavescatter]

Update on that now? Considering the KRG Bottom Metal for my new Rokstok.

Where did you find info on this?

 

[fwafwow]

Update on that now? Considering the KRG Bottom Metal for my new Rokstok.

I'm sorry, but I have still not put in the new BM from High Desert - it's still deer season until 1/12.

 

[lintond]

I found that some shims were necessary to get my BM to work correctly. These are very minimal shims. I got the shim kit here

https://highdesertrifleworks.com/products/tikka-t3-shim-kit


Sent from my iPhone using Tapatalk

 

[mxgsfmdpx]

I found that some shims were necessary to get my BM to work correctly. These are very minimal shims. I got the shim kit here

https://highdesertrifleworks.com/products/tikka-t3-shim-kit


Sent from my iPhone using Tapatalk

Thomas normally sends 4 shims with his units when they ship. The only stocks that I've ever had to use them are on Stockys VG2's and Rokstoks.

 

[fwafwow]

Thomas normally sends 4 shims with his units when they ship. The only stocks that I've ever had to use them are on Stockys VG2's and Rokstoks.

Note that Thomas has now posted a disclaimer about the BM and Rokstoks - "These stocks are designed work with factory Tikka stocks. The will also work with McMillian, Manners, AG Composites, and Mesa Precision Arms. A gunsmith may be required when installing a bottom metal on Boyds, Stockys and the Unknown Munitions Rokstok." The hope and expectation is that the KRG Midas Trigger version will work, and I believe at least one other Rokstock owner has used it.

 

[mxgsfmdpx]

Note that Thomas has now posted a disclaimer about the BM and Rokstoks - "These stocks are designed work with factory Tikka stocks. The will also work with McMillian, Manners, AG Composites, and Mesa Precision Arms. A gunsmith may be required when installing a bottom metal on Boyds, Stockys and the Unknown Munitions Rokstok." The hope and expectation is that the KRG Midas Trigger version will work, and I believe at least one other Rokstock owner has used it.

Great info, thanks!