The cartridges that the 270AR is based on require .473 bolt faces. Is there enough meat on a standard size AR15 bolt head to accommodate the larger case head without shearing locking lugs? If the bolt head is larger will it run in a standard upper and bolt carrier? And what about mags- will it run in a .556, 6.8, or 6.5G mag? Or does it require a .270AR mag? Boosting the power in a AR15 can be desirable- there are a passel of existing cartridges that do that now. Thanks for the info.
Its not a standard bolt its a 800 series bolt made with 9310 alloy and it will run in 6.8SPC PRI mags and yes will work in a standard upper.
Since it has a 0.473 bolt face I'm guessing it shares the body dia of the 458 SOCOM, which feeds single stack from AR mags. This is where the added zip comes from. All this really obseletes is the WSSM uppers, and since brass for them was/is problematic this is a step forward. Basically turns your M4 into a four pound sniper rifle (added weight of the second upper) plus mags and ammo.
