Cascade Range Systems P226X Magwell and Basepad: 23-Round Mags

Cascade Range Systems released a two-piece competition package for the US-made SIG P226 X-series: an aluminum P226X Comp Magwell at $100 and a matching P226 Comp Basepad at $40. The two are designed to work together, and the magwell will not run factory base pads, so this is a package rather than two independent parts.

The reason the parts exist is a real hole in the aftermarket. Armory Craft's P226 magwell is a reproduction of the German SIG Mastershop part, sells for $89.95 in aluminum and $97.95 in steel, and requires a hammer strut seat to install. Its own product listing states plainly that it is not compatible with the variants of the new American-made 226 X5s. Atlas Tactical lists a P226 XFive aluminum magwell starting at $90 in carry and competition styles, but it does not work with factory baseplates either. A shooter with a current US P226X has had thin pickings, and the parts that do exist all carry a base pad caveat.

The Comp Magwell fits four guns: the P226-XFive in any US version, the P226-XFive Legion, the P226X Legion, and the P226X Carry Legion. Everything else needs a closer look. German-built P226s are excluded outright, including the German X-Five, and Cascade Range Systems is direct about why: the geometry does not line up and running it anyway can cause serious problems. Older US Elite and SAO Legion frames can be made to work, but there is a slight ledge and the install has specific steps that are not obvious.

Base pad pairing is the second gate, and it is stricter than the frame list. The magwell was designed around CRS Comp Basepads on Mec-Gar 18-round tubes. It will not run factory P226X 18-round or P226 X-Five 20-round base pads. Other aftermarket pads may clear it, but Cascade Range Systems does not guarantee them. Budget for the basepad alongside the magwell rather than assuming the mags in your bag will drop in. If you are still building out the rest of the gun, our SIG P226 and P229 upgrade guide ranks the trigger, grip, sight, and slide options that matter first.

Weight is a non-issue. The magwell runs about half an ounce, which is nothing next to the aluminum-frame X-series guns it bolts to. That matters for divisions with published weight limits, where a heavier steel magwell can push a borderline setup over the line.

Capacity is the headline. A Mec-Gar 18-round P226 tube with the CRS Comp Basepad holds a reloadable 23 rounds when paired with a Grams Engineering no-lock-back spring and follower kit, part FKSGP2-11, which Cascade Range Systems also stocks. Swap to an 11-coil spring with the stock SIG follower and the same setup holds a reloadable 22 rounds while keeping slide lock-back on an empty magazine. The Grams follower is named for exactly what it does: it will not activate the slide stop.

That is the tradeoff to think through before ordering. One extra round costs you the empty-gun slide lock, which matters for training habits and for any stage where you want the visual cue. For most shooters the 22-round build with lock-back is the better default; take the 23rd round only if the round count genuinely decides a stage.

The pad itself carries a dot matrix on the face for numbering magazines and ledges at the rear for stripping a stuck magazine during a malfunction. Those are the details that separate a competition base pad from a plain capacity extension, and they are the reason to pay $40 instead of buying a generic pad. Cascade Range Systems verified function only with the stock SIG magazine funnel and its own Comp Magwell, so other aftermarket magwells are unproven with it.

Cascade Range Systems also sells a P226X Carry Magwell at $20, and it solves the opposite problem. It is molded from high-strength nylon rather than machined from aluminum, and it sits flush with factory magazines so nothing hangs below the frame to print through a cover garment or catch on a holster mouth. Because it is flush, it runs stock P226X 18-round and P226 X-Five 20-round magazines plus the CRS 10-round limited base pads, with no base pad purchase required.

Buy the Comp for match reloads and the Carry for a concealable or general-purpose X-series gun. The Carry funnel is small by comparison and will not deliver what a competition reload wants, but at one fifth the price of the aluminum version it is a cheap way to take the sharp edge off the mag well on a carry gun.

The third piece Cascade Range Systems is carrying is a set of LOK GridLOK grip panels machined from solid brass, listed at $229.95for the SAO version. The weight figures make the case better than any adjective. LOK publishes the brass panels at 9.55 oz for SAO and 9.85 oz for DA/SA, against 2.5 oz for the stock G10 panels and 6.8 oz for SIG's tungsten-infused X-Five Legion grips. That is roughly 3 oz past tungsten and about 7 oz past stock, sitting low on an already heavy all-metal frame.

LOK's own P226 page lists only the aluminum GridLOK panels at $124.95, so Cascade Range Systems is where the brass version is currently listed. Fitment is X-series only: non-X P226 models and German guns are out. Screws are not included, so the factory hardware carries over, and the set ships with a dowel and four O-rings. SAO and DA/SA are separate parts at separate prices, and ordering the wrong one is the easy mistake to make.

External magwells are prohibited in USPSA Production and Carry Optics. They are legal in Limited, Limited Optics, and Open, so a P226X wearing this magwell is a Limited, Limited Optics, or Open gun in USPSA, not a Carry Optics gun. That is the single rule most likely to catch someone out, because IDPA uses the Carry Optics name for a different division with different equipment rules.

Cascade Range Systems lists the P226X Comp Magwell as approved for IDPA Carry Optics and for PCSL Defensive Practical and Competition. The company also tells buyers to measure and weigh their own setup given how much variation exists across P226 models, which is sound advice: a 23-round magazine is long, and length-gauged divisions will not care what the box says. Box the pistol too. The video notes that wide SAO safeties, not the magwell, are what usually push a P226 out of the gun-test box. For a broader look at what each division rewards, see our competition pistol guide organized by USPSA division and the USPSA Carry Optics pistol rankings. You can also spec a P226 alongside these parts in our rifle and pistol builder.

This is a narrow package aimed squarely at people running a current US-made P226 X-series gun in practical competition, and inside that group it is the most complete answer available. The magwell fits frames the Mastershop reproduction does not, the basepad pushes a P226 to a round count that puts it in the same conversation as a 2011, and the two were engineered as a pair rather than back-fitted to each other.

The X-series P226 has been a strong competition platform held back by a thin parts shelf. That is the gap this fills. If you shoot a German X-Five or a legacy DA/SA P226, none of this is for you; the P226-XFIVE Extreme and Nightmare coverage and the full P226 history cover where those guns sit in the lineup instead.