My A-5 16 gauge is clearly marked on the barrel as 65mm or 2.55905 inches.This is a 1927 gun,S/N 105861, according to Shirley and Vanderlinden. It has the safety through the trigger bow as does my 1951 Sweet Sixteen S/N X-457XX(1951).The only visible difference looking at them side by side is that the length of the bolt is shorter on the older gun.I bought the older gun in mint condition with all the original papers in the old "B" case.It has the solid raised rib. The other has a plain barrel with 70 mm chambers and that is the one that I shoot.
Best Regards
Gene
