KelTec's $511 Folder Now Shoots the Round That Beats Soft Armor

The Sub2000 Gen 3 now chambers 5.7x28mm — and if you don't know what that round was built to do, buckle up.

FN engineered the 5.7x28mm for military Personal Defense Weapon programs. The mission: lightweight, screaming-fast, capable of defeating soft body armor at distance where 9mm runs out of answers. That round now lives in a folding carbine you can zip into a backpack.

**That's not a gimmick. That's a capability jump.**

The Gen 3 runs a 16.15-inch barrel with a 1:7 twist, weighs 4.36 pounds empty, and collapses to backpack-legal dimensions in seconds. Five-pound trigger. Ships with a 20-round FN-pattern ProMag. MSRP: $511.

Truck gun. Pack gun. Closet-corner home-defense carbine. The use cases stack fast.

Here's where it gets interesting: Smith & Wesson just entered the ring with the M&P FPC 5.7 — a direct folding-carbine competitor chambered in the same round. That's not a threat to KelTec. That's validation. When S&W starts chasing your market segment, you built something real.

**Competition keeps prices honest. Gun owners win either way.**

The one honest cost: 5.7x28mm runs pricier per round than 9mm. It's come down hard as the cartridge went mainstream, but it's not range-day-cheap. If you already run a PS90 or a Five-seveN, ammo and magazine commonality turns that cost into a system advantage. If you're starting from scratch, factor it in.

KelTec still holds the value title. Lighter than most alternatives. Cheaper than most alternatives. Folds smaller than most alternatives. For under $520, the math is genuinely hard to beat.

The folding carbine market just got a serious upgrade — and the price of admission hasn't moved. Watch how S&W prices the FPC 5.7 when it hits shelves. That number will tell you everything about how much pressure KelTec just put on the competition.