First post here - I am a big fan of the CMR and I thought I would share how I have addressed some of my minor issues with the rifle.
I have my own 3d Printer - all custom parts were designed by me and made from Carbon Fiber Reinforced Polycarbonate.
Here it is in its current form.
Detail shots of the rail covers - protects both your hands and the rail from damage.
Lower handguard with end stops - still allows easy access to the switch for the weapon light.
Detail of the enhanced magazine base plate. It allows you to get a good pull on the mag base with your index finger while you are pressing the release with your thumb.
Finally, some detail shots of my sling set up. (These parts are designed to work with the common and affordable "Uncle Mikes" style QD sling swivels.)
The front mount is a simple slip-fit ring that fits snugly over the barrel
The rear mount interfaces directly with the stock single point sling eye, it is secured in place with a machine screw and locks up pretty solid.
Anyways - l love the gun, with all my custom parts for me it is almost...perfect. At least good enough that I am done tweaking it. Well...maybe I will add a magnifier sometime in the future.
Let me know your comments or if you have any questions.

I have my own 3d Printer - all custom parts were designed by me and made from Carbon Fiber Reinforced Polycarbonate.
Here it is in its current form.
- I run a Sig Romeo Red Dot with Magpul MBus Pro Sights
- TLR 3 Pistol Light
- Linear Comp - which can be converted into a brake by removing the shroud
- Magpul sling with custom designed/built 2 point sling mounts.
- Custom designed/built rail covers with end stops
- Custom designed/built magazine base plate for easier mag removal
Detail shots of the rail covers - protects both your hands and the rail from damage.
Lower handguard with end stops - still allows easy access to the switch for the weapon light.
Detail of the enhanced magazine base plate. It allows you to get a good pull on the mag base with your index finger while you are pressing the release with your thumb.
Finally, some detail shots of my sling set up. (These parts are designed to work with the common and affordable "Uncle Mikes" style QD sling swivels.)
The front mount is a simple slip-fit ring that fits snugly over the barrel
The rear mount interfaces directly with the stock single point sling eye, it is secured in place with a machine screw and locks up pretty solid.
Anyways - l love the gun, with all my custom parts for me it is almost...perfect. At least good enough that I am done tweaking it. Well...maybe I will add a magnifier sometime in the future.
Let me know your comments or if you have any questions.