Originally Posted by
Eyesquared
In my view the connector of a Glock doesn't have a huge amount to do with your ability to split fast. It mostly takes learning to keep your strong hand relaxed enough to move the trigger finger quickly. Other than consciously knowing how hard to grip, getting this right in live fire comes with getting rounds downrange. This time last year I was in C class, and I couldn't get my trigger finger to split faster than 0.22-0.24 no matter what I did, even if it was just trying to rip rounds into a berm. Without putting any specific training into trying to split faster, I'm now splitting a more standard 0.16-0.18s on close targets, which I credit to learning what grip pressures I need (both firing hand and support hand) and reinforcing that in live fire. Not that this matters much at most matches but on something like a Bill Drill it's good for ~0.3s saved.
For prep and press kind of shooting I don't think that makes that much sense in USPSA either, and I don't think it is that useful of a technique for shooting a Glock. In my view prepping mostly matters when you have a trigger with a lot of heavy takeup, which makes it harder to pull through the whole travel of the trigger without moving the gun. By prepping and then pressing you get to get through the pretravel(and resultant gun movement), then refine your sight picture before breaking a shot. As a practical matter, if you're splitting semi quickly, you don't really have any time to refine your sight picture between the prep and press, which makes the end result effectively the same as trying to pull through the trigger with 1 continuous motion. For the Glock I think it's even less useful simply because the takeup is relatively light compared to the wall and the wall has such a rolling break, I personally see the gun move much more at the break than while pulling through pretravel. In other words by prepping you negate the part of the trigger pull that wasn't that hard to begin with and are still left with the part that you need to really get right to shoot the Glock straight.