http://hkpro.com/forum/showthread.php?t=65384someone help me i have been collecting hk's for about 10 years but know nothing about one hk rifle i have had several years. excuse my ignorance.it is marked g3 has a push pin lower,dated 1962 from golden state arms.it is semi auto it is not marked hk41.has steel slimline front,bipod that is totally different than normal 91 bipod.i am really curious all the books on gun pricing do not mention this rifle they list the 42and 91. thanks in advance jim