This rifle was discussed a few months ago (and I think you can see how much luck the sellers has had getting rid of it!). The serial number on the bolt is phonier than a 3-dollar bill. The rifle is not necessarily a Lend Lease rifle. The markings you see on the FRSB and barrel are Britishicon export proof marks. The rifle could have been Lend Lease, but it could have come through the UK from a third country.

It is unfortunate the seller (or someone else) felt the need to mark up the bolt, as, if memory serves me, this was an original rifle.

The rifle is not listed on SRS as a NM or other "special" rifle. IIRC, this may have been a NM rifle restored to service use. The markings on the bolt were obviously installed with a laser device of some sort.