Staccato HD P4X: 18+1 Steel-Frame Comp 2011 From $3,599

The Staccato HD P4X is the full-size, steel-frame member of Staccato's HD compensated line: 18+1 in 9mm, a one-piece 4-inch compensated barrel, and a billet-machined 4140 steel frame that puts it at 32.5 oz unloaded. Where the aluminum HD C4X was built to carry, the P4X is built to shoot flat and run hard. The steel frame adds mass exactly where a compensated gun wants it, over the trigger and dust cover, so the comp has more weight to work against and the muzzle stays put through fast strings.

This is the piece the HD family was missing. The HD C4X brought the integral compensator into a Glock 19-class carry size, and the older P4 and P4.5 gave duty shooters a full-size 2011 without a comp. The P4X combines both ideas: a full-size grip, a steel frame, and the machined-in compensator on one gun. Staccato SVP of product Paul Smith framed it as “a hybrid full-size grip, 4-inch compensated pistol that delivers more control, more rounds and the kind of shootability the world's most elite professionals demand.”

The headline hardware is the one-piece bull barrel with a compensator machined directly into it. Cutting the comp into the barrel keeps the slide and dust cover inside the standard HD length envelope, so the P4X does not eat holster and range-bag space the way a threaded-on comp does, and there is no muzzle device to shoot loose. Paired with the 4-inch fully captive flat-wire recoil system, the comp bleeds off enough gas to keep the dot flat, which is the entire point of putting a steel frame under it.

The 4140 steel frame is what separates the P4X from every other gun in the line. At 32.5 oz unloaded it is 8 oz heavier than the aluminum C4X, and that mass is the trade you make for softer recoil and a more planted gun. It is too heavy for most people to carry all day, and that is fine, because this is a duty, home defense, and competition gun first. If you want the same compensated barrel in a gun you can conceal, the aluminum C4X is the answer; if you want the flattest-shooting HD, the steel P4X is.

Buy the P4X if the gun lives at the range, on duty, or on a competition belt; buy the C4X if it rides inside the waistband. The two guns share the same one-piece compensated barrel, HOST optic system, ambidextrous controls, and Glock-pattern magazines. The frame is the whole decision: the P4X is 4140 steel at 32.5 oz with 18+1, and the C4X is 7075 aluminum at 24.5 oz with 15+1. Steel shoots flatter and soaks recoil; aluminum carries.

The three extra rounds and the added mass matter more than they sound. A full-size 18-round gun that recovers faster between shots is a different tool than a 15-round carry pistol, even with an identical barrel and trigger. For a broader look at where these two sit against the rest of the platform, our best 2011 pistols guide ranks the current field, and the best compensated carry pistols guide covers where an integral comp earns its keep. You can also compare platforms side by side to line the P4X up against the guns already in your safe.

Staccato

Staccato HD C4X

Compact aluminum-frame HD with the same integral comp, sized for concealed carry

$3499

MSRP

Carry-size HD with integrated compensator, Glock magazine compatibility, and 24.5 oz weight

Pros

• +First Staccato HD sized for concealed carry
• +Integrated compensator without added overall length
• +24.5 oz unloaded is competitive with striker-fired carry guns

Cons

• −$3,499 entry price; Premium package runs $3,899
• −60 to 90 day backorder window typical for new HD releases
• −1.6" width still wider than most striker-fired carry pistols

Caliber: 9mmCapacity: 15+1Barrel: 4.0 inches (with integrated compensator)Weight: 24.5 oz unloaded

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The P4X runs fully ambidextrous controls, a dual-sided thumb safety and slide stop, plus a mag release that swaps for right or left-hand shooters. The single-action trigger breaks at 4.0 to 4.5 lbs, and a mechanical firing pin block keeps it drop-safe. These are the same duty-grade controls the rest of the HD line carries, which means support-hand manipulation and weak-hand malfunction clearing work without shifting grip.

Magazines are the quiet money-saver. The P4X ships with two 18-round steel Glock-pattern magazines and runs full-size Glock-pattern mags off the shelf, so spares cost a fraction of proprietary 2011 tubes. If you are setting one up, the HOST plate and sight decisions come first; our Staccato optic plates guide walks the HOST plate options by footprint, and the Staccato upgrades guide covers magazines, sights, and magwells worth adding.

The Staccato HD P4X starts at $3,599for the Core package, which comes with standard serrations, a curved aluminum trigger, and an Ameriglo blacked-out front sight. The $3,799 Preferred package, Staccato's most popular configuration, adds a Trijicon tritium front night sight, an HD Tactical Magwell, and a third magazine. The $3,999 Premium package steps up to Staccato X-serrations, the tritium front sight, the magwell, and four magazines total.

Every package rides the same steel frame, one-piece compensated barrel, and HOST optic system, so the spread is sights, serrations, magwell, and magazine count, not core hardware. Factory optic mounting, weapon lights, and a right or left-hand mag release are configurable at order. Staccato lists a 90 to 120 day build lead time, and requested services can extend it, so order early if you want one for a specific match or class.

The HD P4X is the HD line finally landing its full-size steel comp gun. For a shooter who wanted the C4X's integral compensator but did not need a carry gun, this is the more logical buy: more weight to fight recoil, three more rounds, and a full-size grip, all on the Glock-magazine ecosystem that keeps feeding costs sane. At $3,599 to start it is priced like the rest of the HD line, which is to say it is a premium 2011 and asks a premium 2011 price.

The strongest buy case is the duty, home defense, or competition shooter who runs a full-size gun and wants the flattest-shooting Staccato without milling a slide or threading on a comp. If you are still deciding between the two, read the best 2011 pistols ranking, and see how the HD stacks up against SIG's entry in our SIG P211 vs Staccato HD comparison. The P4X ships to dealers July 13, 2026.