Longevity, Accuracy Tips for the AR15

[Klem]

Apart from the dicussion over the accuracy of wrenches I like how the torque screwdriver is small, compact, and fits in a range bag. If you take it with you, you tend to use it. Unless you Loktite your ring and base screws/nuts you will find they will loosen, and at differing rates. To the feel it is done up but one will always be looser than the other. Going over all the screws before you shoot every time is as important as preparing the barrel and only takes a minute. Regardless of what the actual torque is the important thing is that all screws and bolts in an interface system are at exactly the same torque.

In answer to your question about how can you know if your receiver is exactly square to the barrel extension without buying a lapping tool. I'm thinking you could use a marker pen on the surface that is to mate and then (if your receiver lets you) gently rotate the barrel in the receiver while applying a little binding pressure. Then pull them apart and see if it has rubbed off evenly.

I agree with 52's take on the difference between bulk manufacturing, core competencies and 'OCD machinists' (made me laugh but it is true). The 45 minutes it takes to centre the barrel in the barreling fixture varies depending on how good the gunsmith is, but also how much run-out they are aiming for on the gauges. Do they care? Is it a Friday afternoon or a Monday morning? Do they like you? This is the part that always gets me... when you shell-out the dollars as they smile at you, you will never know.





This one is a Wheeler called the FAT ('Firearm Accurizing Tool'... the Marketing Department on fire!)