Maxim Defense SPS 505 PDX — 5.56 NATO AR Pistol, 5.5" Barrel, Flat Dark Earth (Arid), M-LOK® Handguard, HATEBRAKE™, ALG Combat Trigger, SCW Pistol System, 20+1 (MXM-50802 | MXM50802 | UPC 680017508029)

Ultra-compact, blast-managed, and built to win in close quarters—the Maxim Defense SPS 505 PDX is a premium AR-pattern pistol chambered in 5.56 NATO with a remarkably short 5.5" barrel. Finished in rugged Flat Dark Earth (Arid) and equipped with Maxim’s HATEBRAKE™ muzzle device to push blast forward, this PDX retains reliability and control thanks to the ultra-short SCW Pistol System, a crisp ALG Combat Trigger, and an M-LOK® compatible free-float handguard for mission-essential accessories. A 20-round magazine is included, making MXM-50802 ready for home defense, vehicle deployment, and high-tempo training right out of the box.

Why the SPS 505 PDX in 5.56 NATO

• Serious Capability, Minimal OAL: The PDX squeezes full-featured AR ergonomics and parts compatibility into a tiny footprint ideal for CQB, hallways, and vehicles.

• HATEBRAKE™ Blast Control: Directs gas forward to reduce side concussion and overpressure—improving comfort and communication in confined spaces.

• SCW Pistol System: Maxim’s ultra-short receiver extension minimizes overall length while preserving cycling reliability and fast handling.

• ALG Combat Trigger: Clean break and short reset support rapid, accurate shot strings when seconds matter.

• M-LOK® Accessory Ready: Rigid, free-float handguard provides real estate for lights, switches, handstops, and QD sling points without adding bulk.

• Mission-Tough Finish: FDE (Arid) anodized coating is low-glare and abrasion resistant for hard daily use.

Key Features & Specifications

• Model: SPS 505 PDX

• Type: Semi-automatic AR pistol

• Caliber: 5.56×45mm NATO (accepts .223 Rem ammo of appropriate pressure)

• Capacity: 20+1 (includes one 20-round magazine)

• Barrel: 5.5", threaded, fitted with HATEBRAKE™ blast-redirecting device

• Handguard: M-LOK® compatible, free-float design

• Trigger: ALG Combat Trigger

• Operating System: AR-pattern, tuned for short-barrel reliability

• Receiver / Finish: Aluminum, Flat Dark Earth (Arid) anodized

• Pistol System: SCW Pistol System (ultra-compact receiver extension)

• Safety: Manual safety selector

• Included: (1) magazine; owner’s materials (contents may vary by distributor)

• Part Numbers: MXM-50802 / MXM50802

• UPC: 680017508029

Performance You’ll Notice

• Manageable Signature Indoors: The HATEBRAKE pushes blast forward, reducing lateral concussion—vital for indoor defense and team environments.

• Fast, Precise Control: The ALG trigger’s predictable break and quick reset keep splits tight and hits consistent through transitions.

• Ultra-Compact Maneuverability: The SCW system and short handguard make the PDX exceptionally nimble around doorways, corners, and inside vehicles.

• Reliable Function: Maxim’s short-barrel tuning is built for dependable cycling with quality 5.56 loads.

Ideal Use Cases

• Home & Property Defense: Compact size, reduced side blast, and proven 5.56 performance at defensive distances.

• Vehicle/Executive Protection: Stows in small compartments; deploys quickly without sacrificing controllability.

• Training & CQB Drills: Excels in low-light, movement, and barricade work; ideal with a white light and red dot.

• Ranch/Overland: Durable finishes and dependable mechanics for daily carry-along utility.

Smart Setup Ideas (Non-Instructional)

• Optics: A closed-emitter red dot for duty durability; confirm mount height for a natural cheek index.

• White Light: M-LOK-mounted light at 3/9 o’clock with a pressure pad for positive ID.

• Sling: Two-point QD sling to stabilize unconventional shooting positions and ease carry.

• Muzzle Options: If swapping devices or adding a suppressor mount (where legal), re-time and re-zero after installation.

Ownership Tips

1. Zero Smart: Establish a 25–50 yd zero tailored to short-barrel ballistics; verify at 100 yds for holdovers.

2. Torque & Witness: Mount optics and rail accessories to spec; paint-pen witness marks simplify health checks.

3. Maintenance Rhythm: Keep the BCG well-lubed during high round counts; periodically verify muzzle-device timing and rail fasteners.

4. Train the Controls: Rehearse selector use, reloads, and light activation to unlock the PDX’s speed advantage.

Safety & Compliance

Know and follow all federal, state, and local laws regarding AR pistols, overall length, muzzle devices, and magazine capacity. Always confirm the pistol is unloaded before maintenance or storage and wear proper eye/ear protection during live fire.

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Maxim Defense SPS 505 PDX — 5.56 NATO, 5.5" AR Pistol, FDE (Arid), HATEBRAKE, ALG Combat Trigger, SCW Pistol System (MXM-50802 | 680017508029): a blast-managed, ultra-compact, mission-ready platform engineered for close-quarters control, fast deployment, and decisive performance.

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