Quoted:
HeliCoils are simple and the above comments are all there is to it. That said, buying the kit to install a couple of HeliCoils may not be cost efficient. The coils themselves are pretty cheap but the install kit costs a bit more (it won't break the bank on that special gun). If you're going to do several then you could easily justify the kit. Just out of curiosity why do you need the HeliCoils? Is it because you don't trust putting a machine screw into aluminum? Why don't you like the roll pin? Isn't it just one more thing for your trigger finger to run across? Even though the screw makes it easy to remove the trigger guard, it isn't a part that needs to come off frequently. Is it an aesthetic thing (I kind of like the look)? I too used to do the drag racing thing and as was previously said anything that was aluminum got the coil, spark plug holes, main bolts holes and head bolts holes being among the first. I very much appreciate the HeliCoil but this doesn't seem to be a high stress area. Any reason you just couldn't tap it? Sorry for all the questions, just trying to get my head around your thought process.

By the way, I've used them all, KeenSerts, QuickSerts, Coil-Serts and HeliCoils etc literally hundreds and hundreds of them. I've seen people campaign one product being better than another (usually in spark plug holes) for one reason or another. I've never found any of them that work any better than HeliCoil and they have a much great availability in a variety of sizes. If a person can't make a HeliCoil work it's likely the installer and not the product.