09-08-2017, 06:24 PM
My DPMS LR-260 bolt lugs are .313"-.315" long.
AR15 Grendel bolt lugs I just measured are .280" on my AA hard use bolt.
Looks like your calipers aren't square in your photo of the .30 RAR bolt. If you come in at an angle with the blades going across the lug, I bet it reads .280", but wither way, it's AR15-length lugs with AR10 diameter bolt, AR10 cross section bolt face, on an AR15 bolt body so it fits in the AR15 carrier.
AR15 Grendel bolt lugs I just measured are .280" on my AA hard use bolt.
Looks like your calipers aren't square in your photo of the .30 RAR bolt. If you come in at an angle with the blades going across the lug, I bet it reads .280", but wither way, it's AR15-length lugs with AR10 diameter bolt, AR10 cross section bolt face, on an AR15 bolt body so it fits in the AR15 carrier.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
