I bought one at Centry Arm in montreal for about $65. They had only a few left (maybe 50) and were clearign them out. Wish i had bought more of them.
I took the tube apart trying to figure out what it was. Thanks for the explanation.
I love the sights. The rear sight revolves for a selction of peeps for different ranges. The front sight screws up ond down, to zero for elevation. The post is offset a bit from the threaded section, so that as it turns, it moves left and right, so the wind can be zeroed as well as the elevation.
My son uses it to shoot military condition matches with military ball ammo. It is quite accurate to shoot and handles well. A much nicer rifle to shoot than a #5.
By the way, don't worry about shooting commercial ammo in 7.62 rifles. The pressure limits are actualy about the same. They appear to be different becasue the original 7.62 spec was quoted in CUP wheras the 308 limits are in PSI. Sort of a metric v english issue.
I have been involved in pressure testing both civilian and military ammo at the Canadian gov't facility at Bell's Corners, ottaw and in the IMR lab at Valleyfield, Quebec. Both flavours of ammo tend to run around 55,000 psi with hot lots running around 60,000.
The hottest lot of ammo I ever saw was an IVI 7.62 Lot at 62,000 20 shot average. The second hottest lot was Winchester Supreme 168gr Match at 61,000. These are 20 shot averages. The hottest single round would have been around 66,000 psi.
This issue of pressure limits being the same was mentioned in the NRA magazine The Rifleman about two years ago.