Is "ultra compact" a defender-size or larger? Just remember, it is harder to buy the recoil springs for anything smaller than an officer size. You might need to buy something from Springfield directly. I'm only suggesting you have it on-hand before you actually need it.
.45acp, .40 S&W, 9mm, .38 Spl, .380 acp, 22lr
12 gauge, .223/5.56x45mm, 30-30 Winchester
2 Chron. 7:14 Christians must seek His face