PM replied to 
gentlemen, thats why we are making it not only rail mounted, but guiderod mounted as well. the main allignment issues are handled by the positioning via the guiderod, the rail mounting is for better stability. we havent gotten everything worked out yet, and i know everyone wants to see a finished product, and will second guess and critizie until they do, but my reason for bringing it up on this forum was to gauge the interest in the product itself.ScottQ said:I would agree with mullanman 100%. Any sort of comp would have to be barrel mounted, if it's to be remotely useful. A rail mounted comp would be little more than eye candy, I would think.
Scott
thank you very much for the insite, you are quit right, we had heard about that having happened, and we took it into consideration. also why we decideded to go with the guide rod mounting as well. we are concerned about stresses to the gun. and we are running tests to see just how much forces are going to be applied and to what areas. there maybe a need to go to a heavier washer for the guiderod, or perhaps even go with a bushing system. this is very much in the R&D phase, yet we do have a working prototype. i may have been a little premature with bringing this to the forums attention, as we are far from a finished product, but i was just so excited about it and wanted to see what everyone reactions to the concept were. just to dispell any other questions, right now we are only working with the 9mm. we do plan to make it so that it can be used on anySnake-eater 1 said:A few years ago, when the first rail-equipped Glocks hit the market, some guys figured out how to cleverly mount weights to the front of the gun on the rails. The idea was to increse front end weight and reduce muzzle flip. It worked for awhile--until the rails were ripped right off the gun.
Don't know if this problem will present itself in your design or not, offered only as a point for consideration.