AR15.Com Archives
 Old drop in with new Evolution upper
DrCyCoe  [Member]
3/8/2011 11:30:40 AM
I have just about decided not to do this, and toss my old drop in kit in with my hunting AR to use as a dedicated way to shoot heavier subsonic rounds in it.

I was curious, can I make my older drop in bolt run with a new Evolution upper? It is not a stainless version and is a couple years old. I get the feeling the anti jam chargng handle in the evolution upper would not work with the older drop in bolt I have. I do see where the upper is offered for $100 less if you do not need the bolt group, but as I already said I have decided to most likely keep the drop in as is and order a complete upper.

Just curious before we decide what route to go. I know we will end up with about 5 of these uppers, just want to get the facts first as we do have a couple of drop in kits.
shadowcop  [Team Member]
3/8/2011 6:00:15 PM
It should work with a new collar. You won't have the features of the new Evolution but I see no reason it should not work.
Dave N
DrCyCoe  [Member]
3/10/2011 9:26:43 AM
Thanks for the info. I am just concerned due to the fact there are two verions of the latch out there.
shadowcop  [Team Member]
3/10/2011 10:17:57 AM
The two different versions of the charging handle are one for .22 dedicated(no gas tube) and the other for a 5.56 conversion(hole in the end to accomodate the gas tube).
Dave N

Did you get my IM?