- Joined
- Dec 3, 2013
- Messages
- 1,844
Had some vacation time these past two weeks so I made some good progress on my PRS gun. Having never actually seen one up close the tubegun chassis was modeled in Solidworks based on photos of commercially available ones.
Cad Model
I took initial measurements off my M700 receiver and then verified the fit by 3D printing the tube for the receiver and the magazine well.
Once I was satisfied with the final measurements and 3D models the parts were machined on a combination of my lathe, CNC mill and heavy duty drill press that has milling capabilities. The only machining I documented was the setup for boring the receiver tube which is 10 inches long. This was made from 2" OD x 1-1/4" ID 6061 extruded tube. Finish ID is 1.365" which is a slip fit for my receiver. The 1 inch boring bar was not long or rigid enough to bore full depth so the part was bored half way and then flipped.
Here is the completed and assembled gun ready for demurring and powder coating. I'm going to do the powder coating myself once the powder coat gun I ordered is back in stock. I still need to make a drum tumbler to do the deburring for the larger parts that will not fit in my vibratory tumbler.
M700 short action that I have trued.
PT&G magnum face bolt with handle tig welded on.
GTR firing pin assembly
TriggerTech single stage trigger
6.5mm MuellerWorks 4 groove barrel in heavy varmint taper finished at 28"
Chambered in 6.5 SAUM
APA LB brake
Magwell machined for AICS style magazines.
Barrel guard machined with M-Lok pattern.
Cad Model
I took initial measurements off my M700 receiver and then verified the fit by 3D printing the tube for the receiver and the magazine well.
Once I was satisfied with the final measurements and 3D models the parts were machined on a combination of my lathe, CNC mill and heavy duty drill press that has milling capabilities. The only machining I documented was the setup for boring the receiver tube which is 10 inches long. This was made from 2" OD x 1-1/4" ID 6061 extruded tube. Finish ID is 1.365" which is a slip fit for my receiver. The 1 inch boring bar was not long or rigid enough to bore full depth so the part was bored half way and then flipped.
Here is the completed and assembled gun ready for demurring and powder coating. I'm going to do the powder coating myself once the powder coat gun I ordered is back in stock. I still need to make a drum tumbler to do the deburring for the larger parts that will not fit in my vibratory tumbler.
M700 short action that I have trued.
PT&G magnum face bolt with handle tig welded on.
GTR firing pin assembly
TriggerTech single stage trigger
6.5mm MuellerWorks 4 groove barrel in heavy varmint taper finished at 28"
Chambered in 6.5 SAUM
APA LB brake
Magwell machined for AICS style magazines.
Barrel guard machined with M-Lok pattern.