08 November 2005
AR-7 Assembly / Disassembly without Schematic
In lieu of an inaugural blog post, I am providing an illustrated guide to the assembly of the AR-7. I am blogging because I tend to accumulate useful information unrelated to my profession throughout the day and don't remember or share a lot of it. What a waste!
A Google search yields little useful information to the guy who has disassembled his Armalite, Henry Repeating Arms, or Charter Arms AR-7, and can't get it back together. And this guy was missing the trigger axis pin and the mag catch spring because he did this on his second story porch, so don't do that.
So here's what you have to begin with; the mag catch and ejector have already been installed, that's a no-brainer. You can see the mag catch spring has been replaced with a sectioned pencil erasor, and the cotter pin (from True Value hardware) used to make a new trigger pin is pictured as well. The tolerances in this little .22 are pretty loose.
Next, install the hammer, spring and hammer pin. The long end of the pin goes into the receiver half. Make sure the ground down face of the hammer is flush with the bolt; it will go in either way.
To install the trigger, put the trigger pin into the receiver, tape down the hammer pin so it doesn't fly out (hold it down with your thumb, too) and use a dental pick to pull up the hammer spring.
Drop the hammer spring retaining pin (yes I am making up my own nomenclature) into the rear of the trigger, and let the spring fall into the grooves. Make sure the trigger is fully seated to install the left receiver cover. You'll need to use that dental pick to wiggle the hammer pin into position, through and into the hole in the receiver cover.
Function test: Bolt forward, safety won't engage. Bolt cycled, hammer cocked, safety will engage. Safety off, pull trigger, fire.
There is no real 'field strip,' because the ejector holds the bolt in, after the charging handle is removed. And to get the ejector out, you get into the fine mess you were in awhile ago. But there's still something really cool about this little rifle, so I won't be getting rid of it.
Posted by Author at 19:16