S length. Sure you need some force, but this is due to the fact that the short alter buckle is held in place by friction. This may be the weak point to anyone but I have discovered this for being of no issues for me, the sling hasn't missed a https://smithwessonmp15-22magazin33185.shotblogs.com/how-midwest-industries-akg2-ak-47-74-scope-mount-can-save-you-time-stress-and-money-48625619