Stamp collecting: Ruger 10/22 SBR build
After getting my Form 1 back to build this Ruger 10/22 SBR, I didn’t waste much time. I engraved the receiver myself using an old set of gravers. It’s ugly, but readable and conforms to required spec’s.
The barrel is 3.5″ to keep even hot bulk pack ammo and CCI mini-mags subsonic, the sight is a ‘Docter’ optic micro red dot, the stock is a custom built bumpfire stock and the trigger assembly is a Kidd 2-stage unit.
I’ve made some of the last changes to the configuration, and wanted to answer a few questions. First off, I’ve added a Vertical fore-grip and extended the thumb stud. This is what the updated rifle looks like:
And I wanted to explain some of the modifications to the stock.
When I added the choate folding portion to the stock, I machined away the fixed stock to fit the folding mechanism and butt-stock section. I also cut down the front end of the stock. Here’s a comparison next to a standard AA stock:
As you can see the choate folding portion is a good fit, and allows the overall length to be much shorter.
The LMA mechanism is what allows the magic to happen, it’s a series of linear bearings and precision ground rods intended to reduce friction. The photos below show the LMA in the rearward and forward position. The block that is moved in the photos actually remains stationary in the stock, and allows the guns action to smoothly slide forward and back.
I hope that helps to answer some questions!