Armory Sponsor
Posted: 4/19/2008 9:27:50 AM EDT
|
I am in the same boat as another member here and am slowly working on building a 1903a3 rifle. www.ar15.com/forums/topic.html?b=6&f=14&t=239551&page=2 I have all the small parts (stock and parts, spare bolt) with receiver and barrel on its way. My question is: How do i install the barrel properly? Is there a detailed write up with illustrations anywhere on line? |
Not a very good answer for an '03a3 it is not that simple., A mauser maybe, but not a springfield. |
|
O3A3 will have an index mark on the left side of the reciever, and a corresponding index mark on the barrel, tighten until the marks line up, be sure to clean the threads on the barrel and in the reciever before, check headspace, preferably with a go/no-go and/or field gauges, (USGI guages are numbered 1.940 go, 1.946 no go, 1.950 field, commercial guages will be numbered differently, but will work the same, they are measured from a different point) if the barrel is new, you will have to use a reamer to get the rifle to headspace, new barrels were cut short, as are most commercial replacements, (douglas etc) if the barrel is from another rifle, you may get lucky, it may headspace, or not, put the barrel in the press or stationary vise, put the receiver in the wrench, (and use the correct one, no co-magnon tools needed) hope that helps, |
good point, I guess I have been fortunate, in that I have never had to use anything but the index marks for a USGI O3 or O3A3 Barrel, (and I've done quite a few) if it does not index correctly, the extractor groove will also be out of place, but thats an easy check w/ a bolt, if you are using a commercial barrel, then you will need to cut the notch for the extractor, |
Those are the tools of a hack, sadly those tools ruined many a fine rifle.... Read Kuhnhausen's book on Mausers and you'll learn why you use a receiver wrench and a barrel vise.... |
Armory Sponsor