XS Sights +5 Magazine Extension: M&P 2.0 and PDP, $40

The XS +5 is a basepad replacement that adds five rounds of 9mm capacity to a Smith & Wesson M&P 2.0 or Walther PDP factory magazine. The body is machined from aircraft-grade aluminum, finished in Black Nitride, and installs without tools by sliding off the factory floorplate and clipping the XS housing onto the same retention plate. The factory magazine spring and follower stay in the magazine. There is no upgraded spring to source, no shim kit, no break-in.

The math is simple. XS Sights publishes the +5 for the 15-round and 18-round magazines in both families. A 15-round M&P 2.0 Compact or PDP Compact magazine becomes a 20-rounder. The 18-round M&P 2.0 Full Size extended magazine and the 18-round Walther PDP Full Size magazine both become 23-rounders. The factory spring and follower stay in the magazine. Jeff King, Marketing Manager at XS Sights, framed it for duty, training, and competitive shooting use. Those are the three places a five-round capacity bump actually changes how the gun runs.

The M&P 2.0 and the Walther PDP have spent the last three years grinding into Glock's share of the duty, training, and competition pistol market. The 9mm M&P M2.0 Metal Compact ships at 15+1, the M&P FPC carbine feeds from the same magazine family, and the PDP Full Size ships with 18-round magazines that already outrun the standard Glock 17 magazine. What the platforms lacked was a strong +5 option. XTech's polymer MTX +5 has covered the M&P since 2018, but PDP shooters have been stuck running stock 18-rounders with no factory or aftermarket extended path.

The XS +5 closes that gap and does it in a single SKU that spans both platforms. For a duty officer running an M&P 2.0 Metal Compact on a belt, going from 15+1 to 20+1 on the gun erases the on-board capacity disadvantage against a Glock 19X or a Sig P320 XCarry. For a USPSA Carry Optics shooter running an M&P 2.0 Competitor or a PDP Match SF, the extra rounds stretch a stage plan and reduce forced reloads. For a PCC competitor running the M&P FPC, which feeds from the same M&P pistol magazines, an 18+5 23-round mag turns the FPC into a legitimate USPSA PCC option without hunting down an aftermarket extended-mag kit.

The XS +5 fits two magazine families. On the Smith & Wesson side, XS publishes fitment on the 15-round M&P 2.0 Compact magazine and the 18-round M&P 2.0 Full Size extended magazine in 9mm. Those magazines feed the M&P 2.0 Full Size, the M&P 2.0 Metal, the M&P 2.0 Compact, the M&P FPC carbine, and the M&P 2.0 Competitor. The 17-round M&P 2.0 Full Size factory magazine uses the same body but a different floorplate, and XS does not list 17-round fitment, so treat that as unverified until confirmed. The extension does not fit the M&P Shield Plus, M&P Shield 1.0, M&P 22 Compact, M&P 380 EZ, or any original-generation M&P magazine, all of which use a different floorplate rail geometry.

On the Walther side, the extension fits PDP 9mm 15-round and 18-round factory magazines. The PDP F-Series and the competition-spec PDP Match SF share the standard PDP magazine geometry, so the extension installs on those too. The PDP Compact uses a different magazine height than the Full Size, but it accepts the same floorplate footprint, so a +5 on a 15-round compact magazine still functions. Walther PPS, Walther P99, and Walther Q4 / Q5 SF use different magazine bodies and are out of scope. The new article does not list fitment on the PDP-F SF Pro 20-round magazines that started shipping with the Performance Duty Pistol Match SF Pro this year; treat that fitment as unverified until XS Sights or Walther publishes confirmation.

The XTech MTX +5 has been the default M&P +5 since 2018. It lists at $29.95, runs a polymer body, ships with a custom XTech spring, and does not fit the PDP. The XS +5 lists at $40, runs an aluminum body with a Black Nitride finish, works on the factory spring, and covers both the M&P 2.0 and the PDP. The $10 delta buys you a metal basepad, no separate spring to install or stock, and a single SKU that spans both platforms in a mixed-platform safe.

If your magazine inventory is all M&P and you are comfortable with the XTech custom spring, the MTX +5 is still a solid buy and saves you $10 per magazine. If you run the PDP, want a metal basepad that will not crack on a concrete reload at a USPSA stage, or do not want to add another spring SKU to your training kit, the XS +5 is the better answer. Magpul does not currently make a +5 for either platform, and Glock-pattern PMAG extensions do not cross-fit.

The +5 is a duty, training, and competition product. On a duty belt, the extension brings the M&P 2.0 Metal Compact into the 20+1 capacity bracket that has become the duty standard, and turns a PDP Full Size 18-rounder into a 23-rounder that runs four stages of qualifications without a forced reload. For a department issuing the M&P 2.0, pairing the extension with a modern pistol red dot and a WML closes the practical gap to a Glock 17X duty package without buying new guns.

For training, the math is simpler. Five extra rounds per magazine across an eight-mag training class is 40 fewer reloads, which is roughly 20 to 30 minutes of recovered live-fire time. That is a real, measurable training-cost reduction for an instructor who pays for range time by the hour. For a private shooter running a competition pistol or a compensated carry pistol on a static range, the extra capacity stretches the useful round count of each magazine in a drill.

For competition, the extension lands cleanly in USPSA Carry Optics, IDPA SSP, and the PCC division (when the M&P FPC is in play). An M&P 2.0 Competitor running three 18+5 23-round extended magazines runs almost any field-course stage without a planned reload. For PDP Match SF shooters in USPSA Limited Optics, a 23-round mag puts the gun on capacity parity with a 2011. For a head-to-head between the PDP and a Glock 47 in the duty role, see our best full-size 9mm pistols ranking, which weights capacity, trigger, and optic-readiness side by side. To spec a complete duty or competition build around the M&P or PDP, the builder lays out magazines, lights, optics, and holsters in one place.

The XS +5 is a free-state product. A 20-round M&P 2.0 magazine or a 23-round PDP magazine is over the 10-round limit in California, New York, New Jersey, Massachusetts, Connecticut, Hawaii (pistol), Maryland (pistol), Colorado, Illinois, Vermont (pistol), and Washington. The +5 floorplate is not a permanent block, and a court-tested practice of selling extended magazines into restricted states using non-removable basepads has not been established. Buy and run the extension where state law allows it.

Virginia magazine sales of 10+ round capacity remain legal today but a state assault-weapons-style law takes effect July 1, 2026. We covered the run on AR-15s and standard capacity magazines ahead of that deadline in our Virginia gun sales surge report. If you live in Virginia and plan to run the XS +5 on a duty or training gun, order before July 1 and confirm with a local FFL whether the floorplate falls under the new law's magazine definition. For a tour of which handguns and configurations actually remain legal under state-by-state restrictions, see our California legal tactical firearms guide and the related New York, New Jersey, and Washington state guides.

Install is the same procedure as a factory basepad swap. On the M&P 2.0, depress the floorplate retention plunger visible through the hole in the bottom of the factory floorplate, slide the floorplate off the front, lift out the retention plate, then slide the XS aluminum body on from the front, replace the retention plate, and seat the base. The factory spring and follower do not come out. On the PDP, the procedure is identical: depress the plunger, slide off the factory plate, transfer the retention plate, slide on the XS body. XS publishes a one-page install PDF that covers torque and orientation; reference it before the first swap if you have not done a +5 conversion before.

The factory spring runs the extended length without modification. Function-test each converted magazine on a live range with the same defensive or duty load you intend to carry. The +5 does not modify the feed lips or follower, so failures to feed at the last round are exceptionally rare, but a 25-round live function test on a converted magazine is the cost of trusting it for duty use. For a deeper look at upgrade priorities on these platforms, the S&W M&P Shield Plus and 2.0 upgrades guide is the closest sibling on the M&P side, and the Glock magazine extensions and basepads guide covers the install math that translates to any striker-fired platform.

The XS Sights +5 is the first aluminum, factory-spring, dual-platform extension to ship for the M&P 2.0 and Walther PDP, and at $40 it lands at the price point that makes a 20- or 23-round magazine an obvious upgrade for duty, training, and competition users. The aluminum body and Black Nitride finish address the one consistent complaint about polymer extensions on heavy training mags, and the factory-spring approach removes the single most common failure mode on third-party +5 kits.

If you already own an M&P 2.0, an M&P FPC, a Walther PDP, or a PDP Match SF and you live in a free state, the $40 extension is the cheapest single upgrade that meaningfully changes how the platform runs. Stock three to six of them, function-test each converted magazine with your carry load, and the round-count gap to a 2011 or a Glock 47 disappears. For the full M&P upgrade path on a defensive or carry gun, work backwards from the best 9mm self-defense ammo guide and the best carry optics pistols ranking. For PDP-specific context, our coverage of the Walther P14 at EnforceTac 2026 lays out where the PDP family is heading next.