I have built on many OOW's and the only thing thats an issue is that the front of them are just a tad long,
unsure of exact measurements of too long
although the front has to be trimmed once you get the trigger gard in place and a magazine or two to get the exact distance right on the front trunion, seems like it's about and eighth of an inch at the top and about half at the bottom, (give or take)
of course the only other issue is the selector lever hole is a bit low on the 7.62 and just right on the 5.45, small issue, but something to deal with on the safety issue.
unsure of exact measurements of too long
although the front has to be trimmed once you get the trigger gard in place and a magazine or two to get the exact distance right on the front trunion, seems like it's about and eighth of an inch at the top and about half at the bottom, (give or take)
of course the only other issue is the selector lever hole is a bit low on the 7.62 and just right on the 5.45, small issue, but something to deal with on the safety issue.
