So I ordered my TacSol M4 upper from Gunkings.com last Saturday and had it in my grubby hands by this past Thursday (thanks Jim K. for the excellent service!).
Thursday night I ran a patch down the bore to make sure everything was cool. Also, inspected the bolt assemby and sprayed it down with Rem oil and let it dry out overnight.
Friday I lightly coated the rails with CLP and the hammer reset surface on the bolt with Brownell's Action Lube. I then assembled the upper onto a RRA NM lower and headed to my local range.
Right now, I'm a happy camper. I ran 100 Fed bulk rounds through the gun. Early on, I had six FTEs in the first 40 rounds - kind of par for the course, based on other posts I have read. In the remaining 60 rounds, only two FTEs - this is more like it, I thought. So, an encouraging trend as things get worn in and settle down a bit.
Accuracy was as good as I could expect with my 50 year old eyes and the standard A2 sights I had mounted. At 25 yds off of a sandbag rest, I could consistently fire ten round groups into a two inch bullseye. In the future, I will be trying the combination at longer distances with both a smaller aperture leaf in the A2 sight and also some different optics that I have on hand. With these, the accuracy should be right on the money based on past experience.
Bottom line - the TacSol M4 upper conversion appears to be a winner. Only time (and a few thousand rounds
will tell).
Shoot safe.
Mike
Some gun porn added, by popular demand
http://i7.photobucket.com/albums/y286/dragbike_mike/AR22/AR22profile.jpg
http://i7.photobucket.com/albums/y286/dragbike_mike/AR22/AR22receiver.jpg