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My Glenfield Model 25 has a micro-groove barrel,so I imagine others do as well.
Open bolt, elevate barrel, pull trigger , catch bolt before it hits the ground
your marlin/glenfield was made in 1974.
value marlin glenfield model 60 22 simi auto rifle
write to marlin with any and all writngs/markings on reciever/barrel and serial numbers
Marlin Glenfield. http://www.marlinfirearms.com/About/History.aspx Marlin Glenfield http://www.marlinfirearms.com/About/History.aspx
On my model 20 its on the left side of the barrel directly up from the clip.
1965
$200
Your Glenfield model 60 was produced in 1989.
your glenfield was made in 1968.
Call Marlin Customer Service 800-544-8892. Place orders there. Part # 504046. Glenfield 20 is same as Marlin Model 780, except for the wood.