Just having my pistol setting there cocked and locked last night and most of today was enough to compress the spare spring, almost to the same length as the one that was in the kit. That one was shipped compressed just to the point where the slide stop lines up with the disassembly notch. The hole in the guide rod is in the perfect location. After I compared them I put the spring I bought as a spare in its Ziploc bag, and put the one that came in the kit back in. I loaded 2 mags, one with 12 rounds of the G9 Woodsman, and since I only have 20 rounds, 4 rounds of G9 External Hollow Points with the 8 remaining Woodsman rounds on top. After lowering the slide stop to feed the first round of each mag, I pulled the slide back and let it chamber one round after another without a hiccup. Normal-shaped bullets shouldn't be a problem.