Bolt Action AR upper in 6.5 Grendel

[bj139]

The LANTAC is interesting because of the small changes.
1. Spring assisted bolt unlocking
2. NO gas rings as in none
3. Coated cam pin (nickel boron?) to reduce friction

Edit: Can the LANTAC bolt be inserted into an upper with a gas block and tube and what happens if fired?
I'm guessing nothing except a lot of gas in the receiver.

BTW, I did try firing an AR without a gas block or tube AND also without a recoil spring. It fired fine and stayed locked.
Feeding had to be done with a hard forward push since there was no spring assist.