Not by much in the aspect of locking, the hole isnt round and its sometimes on bouth sides but it performes in the same manner as the greener.

The screw grip surely is a excellent system but its much worse to fit i recon, so in a high cost arm why not, in all the others there will be corners cut. A dollshead with an angled grip would be the same thing, accept for the larger bearing surface on the screw grip on the vertical lockup.

But the same thing is with the screw grip, if its off face there will always be a horizontal gap left if put back on face, the only way would be to bush the action at the hole for the extended rib.

This makes me want to comment the types of action with a vertical pin lockup as the bissel and the german one in this thread http://forums.nitroexpress.com/showflat....;gonew=1#UNREAD

Yeas they are excellent third fasteners visually, but as an lockup the will lack in comparision with a common third fastener.

Does this mean the are vorse, hell no, but they are not as strong as crossbolt for instance, would i want one, hell yeah.