Kel-Tec PF9 +1 Magazine Extension
thingiverse
Based on 562uned's Kel-Tec PF9 Magazine Extension, now with +1 additional round capacity! Tested on two new-production and two older-production PF9 magazines. Fits all mags securely and functionally is identical to the Kel-Tec +1 Extension that came pre-installed on my older magazines. Slightly tricky to hold the spring compressed while sliding the extension on, a small flat bladed screwdriver helps. Current version has survived being dropped onto concrete from 48 inches while full of rounds. I have this marked as a work-in-progress because it isn't perfect and I may come back to it, but it's completely functional so I'm calling it Good Enough.
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