EGW Guide Rods fits flush with the slide so you can turn the bushing to disassemble the gun and features a takedown hole for easy dis-assembly. The head of the guide rod has smooth beveled edges to make for a seamless look.
The STI Guide rods are made specifically for the 2011 models as the button on the end of the guide rod is smaller in diameter than a standard 1911 Guide Rod that has a larger diameter button.
These guide rods fits flush with the slide so you can turn the bushing to disassemble the gun.
Check for fit in 3 areas: (1) Barrel feet should not contact head (2) Where guide rod rests against frame (3) Back surface of slide/dustcover is flat and even.
Tungsten Guide Rods should be checked by a gunsmith familiar with the 1911/2011 design. It may require minor fitting to contact the frame evenly. Failure to do so may lead to premature wear and/or breakage which will not be covered under warranty.