As Tom said, there were many more M2 than GNR holsters produced. However, the M2 is roughly 30 years older than the GNR, so really nice condition M2s are also pretty difficult to find. Given the two holsters in about the same 85-90%condition, I would guess that the GNR might run 1 1/2 to 2 times as expensive as the M2, but the M2 catches up quickly as the condition approaches mint.
