Glock-Gen IV Model 37-.45-GAP FS with 3 Mags was designed by GLOCK, it has nearly the same performance as the .45 ACP ammunition but is short enough to fit into smaller framed
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Inside The .45 GAP
Kings Online - Glock 37 Gen 3 .45 GAP w/ one mag- $269.99 | gun.deals
The Forgotten Glock 37 - Mike Helms
Glock 37 Gen 3, Semi-Automatic, .45 GAP, 4.5" Barrel, 10+1 Rounds, Used Police Trade-In - 667844, Semi-Automatic at Sportsman's Guide
Glock 37 .45 GAP 4.5" Barrel 10+1 Rounds Used Night Sights - $246.48 shipped with code "WARRIOR" | gun.deals
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