JRT
NES Member
It’s solid but requires you to mill into the lower to make it compatible. I have an original and they’re fantastic. The repro doesn’t require you to mill the lower.
We’re talking about a 607 versus XM177E2 which is just an evolution.
If this is your first retro rifle honesty just go with the XM177E2, E1 or GAU-5 depending which one tickles you the most. Not saying don’t build a 607 but it is 100% the most expensive to make.
E2 11.5” (functionally the best model hence it’s longevity and parts life) Forward assist on most.
E1 10.5”
GAU-5 10.5”
607 10.5”
GAU and E1 are often the same rifle. Biggest difference being that the E1 can “technically” have a forward assist though 99% didn’t.
If you’re in need as well I have stocks of a good portion of parts for a lot of these. Or access to a great many.
View: https://youtu.be/I38pIAEL0i0
Would you do a slick side or the M16A1?