I agree that if money is tight for the family, an other gun is one of the last things that ought to drain money from the budget.
I own a CS45, one of the early production stainless models (they introduced the line with carbon steel slide models). Nice enough diminutive .45 pistol. It has a 3.25" barrel, versus the 4513TSW's 3.75" barrel & the G36's 3.78" barrel.
Capacity is the same, with the CS45 having a 6-rd magazine.
Speaking of magazines, though, you'll be limited to using the 6-rd magazine made specifically for the CS45, as the 6, 7 & 8-rd mags made for the other 3rd gen .45's lack the secondary set of dimples near the impressed P-lips which are used in the CS45 mags. These extra dimples are used to help prevent displacement of the top round under the greater recoil experienced in the CS45. They also make loading a bit tougher, offering more resistance to loading the rounds into the mag (as well as when manually unloading mags).
The older CS45's had plastic sights and a single side manual safety/decocking assembly. The later production models had steel low-mount Novak sights and an ambi assembly.
I'd offer the observation that using the CS45 requires pretty much the same attention to proper grip technique and grip stability (locked wrist/firm grip) as when shooting the G36, for most folks. I've seen instances where someone could induce a feeding stoppage by allowing their wrist to "break" or their grip to relax at the wrong moment. Then again, the smaller you go in .45 pistols in general, the less forgiving they are of shooter influences.
I've often thought about picking up a G36 for my collection, but already having a 4513, CS45 & Colt OM, which are similar in overall size, as well as magazine capacity, has made the G36 seem a bit unnecessary. I have a 6-shot Colt Officers Model, too.
I've found the CS45's (and my CS9) to offer a surprising level of practical and inherent accuracy with a variety of factory ammunition.
The CS series of guns, like the TSW's, have been discontinued for commercial sales for a while. I heard they were still making an occasional run of them for LE agency orders (with a run of CS45's being mentioned in this regard a while back, before they moved the 3rd gen production to the Houlton plant). The CS40 was discontinued several years ago when the S&W decided it wasn't a profitable model (I was told that they sold less than 100 units in what became the last year of its production).
The CS9 & CS45, though, were always mentioned as selling well, even though the company never really did much in the way of advertising after their introduction. Unfortunately, it's too expensive to make the metal-framed 3rd gen guns compared to plastic framed guns. Even CNC cutters require more time to make a frame than popping one out of a mold every 85 seconds.
