dtech
New member
Originally Posted By: steve garrettI bought one of those tools. the thing I don't like about them is the friction it causes inside the upper. So add lube you might think. the problem its too easy to get the lube mixed in with the lapping compound. I didn't like how it was working. the better option would be just send the thing to mike.
mike, I appreciate your comments here lately. I would be interested in your thoughts between barrel extension fit to upper fit, have you seen any difference if the barrel extension isn't fitting that tightly when its inserted into the upper? are you just using blue locktite on your extension when putting these together?
I feel the fit between the barrel-extension and upper is crucial. The AR-15 was never meant to do what we are doing with it. It was originally designed as a weapon of war, and accuracy just wasn't all that important. It had a spindly, light barrel hanging out of the upper receiver. Now, we are hanging great, big bull barrels 24" long off of the end of the receiver, and expecting fine accuracy.
These barrels are supported by a smooth, hard surface 1" in diameter and about 1" long. If you imagine how much leverage that long heavy barrel has, you will see why I "bed" the extension in loc-tite. The thread-locker is not used as a "glue" but as a bedding compound, leaving the barrel-extension now where to move. The upper and barrel-extension, for all intents and purposes, become one-piece.
mike, I appreciate your comments here lately. I would be interested in your thoughts between barrel extension fit to upper fit, have you seen any difference if the barrel extension isn't fitting that tightly when its inserted into the upper? are you just using blue locktite on your extension when putting these together?
I feel the fit between the barrel-extension and upper is crucial. The AR-15 was never meant to do what we are doing with it. It was originally designed as a weapon of war, and accuracy just wasn't all that important. It had a spindly, light barrel hanging out of the upper receiver. Now, we are hanging great, big bull barrels 24" long off of the end of the receiver, and expecting fine accuracy.
These barrels are supported by a smooth, hard surface 1" in diameter and about 1" long. If you imagine how much leverage that long heavy barrel has, you will see why I "bed" the extension in loc-tite. The thread-locker is not used as a "glue" but as a bedding compound, leaving the barrel-extension now where to move. The upper and barrel-extension, for all intents and purposes, become one-piece.