Nope. The standard lug may need a bit of fitting. This can easily be done with a file & sandpaper. Again, I used the PT&G .250” Non-Tapered style in the picture & I did have to trim just the bottom slightly. However, this is normal as they are oversized. The Lug I made would not fit the TAC21 by a long shot, but it does fit my Mirage URL chassis.