The following photos and descriptions are courtesy of JHUSKEY.
ic 1. AR-30 original without cheek piece, showing bayonette end of stock that machinist needs to copy. Shows Xtreme Chassis and possibility of what could go on the other end of the bayonette with a little imagination. The Xtreme stock, or the chassis stock on my 375 Cheytac could be easily adapted to a bayonette mount to go into the rear of the AR-30 stock. Having one of each in hand to look at would show you how easy this can be. If you had a Tubb rifle, you could adapt one of those stocks very easily.
Pic 2. A closer up view of #1.
Pic 3. My AR-30 stock showing the cheek piece attachment into the top of the stock - two drilled holes, two pier posts, and two lock screws. You will also note besides the rear screw in the stock, a side screw that secures the front of the stock to the bar.
Pic 4. My stock showing the shooter side of the stock. Shows the thumb cut out you have to do to remove the bottom/drop side of the AR stock.
Pic 5. Bottom view of my stock.
My guy took a piece of round bar stock and made the rear end of the AR-15 tube out of solid aluminum (he did this because the AR-15 tube is not strong enough to mount the cheek piece the way we did it), then from the thread rear portion (which he deleted) forward, made the bayonette end of the AR-30 stock. He drilled in the two post holes for the adjustable cheek piece, made that out of delrin and put the two cheek piece posts on the delrin, and did two set screws on the side of the stock.
ic 1. AR-30 original without cheek piece, showing bayonette end of stock that machinist needs to copy. Shows Xtreme Chassis and possibility of what could go on the other end of the bayonette with a little imagination. The Xtreme stock, or the chassis stock on my 375 Cheytac could be easily adapted to a bayonette mount to go into the rear of the AR-30 stock. Having one of each in hand to look at would show you how easy this can be. If you had a Tubb rifle, you could adapt one of those stocks very easily.
Pic 2. A closer up view of #1.
Pic 3. My AR-30 stock showing the cheek piece attachment into the top of the stock - two drilled holes, two pier posts, and two lock screws. You will also note besides the rear screw in the stock, a side screw that secures the front of the stock to the bar.
Pic 4. My stock showing the shooter side of the stock. Shows the thumb cut out you have to do to remove the bottom/drop side of the AR stock.
Pic 5. Bottom view of my stock.
My guy took a piece of round bar stock and made the rear end of the AR-15 tube out of solid aluminum (he did this because the AR-15 tube is not strong enough to mount the cheek piece the way we did it), then from the thread rear portion (which he deleted) forward, made the bayonette end of the AR-30 stock. He drilled in the two post holes for the adjustable cheek piece, made that out of delrin and put the two cheek piece posts on the delrin, and did two set screws on the side of the stock.