n00b question re. M305 op rod guide

I removed the pin, pulled the guide down and buffed the mounting boss then brake cleaned the whole area, I then coated the boss in JB Weld, fitted the guide and pinned it back in place. I let it cure for a day and 400 rounds later it's still rock solid. ymmv.
 
How exactly do you check th barrel indexing? The stickies mention looking at the difference between the rear and front sight but not much else.
 
Duke878 said:
Where exactly in the stickies did you find the detail instructions? I've been searching without any luck!
Click to expand...

Sheesh I can't remember now. When all was said and done I just followed the video posted by yomomma in post #6. Truthfully I don't even remember how closely I followed the video it was so long ago now.

Basically I cleaned the area (and the inside of the op rod guide ring), meticulously made a tight, offset dimple pattern (with a centre-punch) around the whole "mounting boss(?)", then coated the whole works with blue Loctite, and put it back together. The hardest part was getting that damned roll pin to go back in. I initially "set" the pin with a hammer and then used a c-clamp with clean rags to protect the rifle parts as I slowly squeezed the sucker back into place. My first few attempts at this failed, and there was lots of swearing involved, but eventually I got it. It seemed more practical than trying to beat it back in with the hammer.

As soon as I had everything re-assembled (sans lock and stock) started cycling the action over and over again before the Loctite could set. The action was a bit tight at first, but after a few cycles it loosened up and then became very smooth. At this point I let it be for a day so I could be sure the Loctite had set. I also wanted to make sure the op-rod was nicely aligned with the piston. The next day it cycled just as smoothly as before. And I keep checking it every so often.

Unfortunately, my current situation relegates me to living in the West side of Vancouver, so my trips to the local rifle range are few and far between.... AS IN, I did the job a couple months ago and still haven't had a chance to test it. For all I know the op-rod will bind after the first few shots. Or it might be perfect. We will see.

Also, I solved my front sight issue by jamming some coins between the centre-post and the good "wing" (I can never remember the proper name for that part), and using a c-clamp to compress the wonky wing back into position. Now it looks proper. And saved me $20+ for a new front sight. While I was doing all this work I also sanded down the stock (and hand guard) and gave it a few coats of olive-drab krylon and clear coat. I spent more time taping off the inside of the stock and the front sling swivel (I removed all other components from the stock) than I spent actually painting it. It turned out looking great (for a M305 ha ha).

I just hope it works good. I don't really want to put any money into it, besides maybe a proper spring guide.
 
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