Quoted:
Newbie here, well I was around 15-20 years ago but that is another story. I have a .40 SW upper and years ago I remember mating it with my Colt GC lower it used a special forward pivot pin(which I have), but I cannot remember if anything else had to be altered ie the buffer,springs,etc. Anyone got a clue?
Dan O'
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Shoot it as is, then if it has any issues, that's when you address them.
If I was to guess at any issues that you may have......1st is Feeding.....2nd is extraction.......and then maybe play with buffer weight (try a 5.5 oz.....AFTER starting with a std 3.5oz )
With a std length carbine style buffer in a PCC configuration, you should be using a poly/rubber buffer spacer to create the proper stroke length required for the BCG.
BCG should bottom out about 1/8" back from the bolt catch.
This is how set-up should go....load 1 round in mag, charge weapon, fire weapon.
Verify no feeding or extraction issues.
If it had an issue, look to a BCG/mag issue. Some BCG might interfere with magazine.
Some ejectors may need a slight adjustment. Look for any obvious wear lines on the components.
If these don't solve it, only then would I look at the feed cone of the barrel, or bullet shape.
If it shot the single round OK......
Load 2 rounds -fire- and then verify no feeding/extraction malfunctions.
Load 5 rounds -fire- and then verify no malfunctions. If you have zero malfunctions at this point.....I would just go to the 5.5oz buffer to slow it down some and call it good.
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