SIG Sauer MPX K, Semi-Automatic Pistol, M-LOK, 4.5" Barrel, SIG Folding Brace, Timney Trigger - PMPX4B935

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Sig Sauer SIG Sauer MPX K, Semi-Automatic Pistol, M-LOK, 4.5" Barrel, SIG Folding Brace, Timney Trigger - PMPX4B935
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Overview

The SIG Sauer MPX K, Semi-Automatic Pistol, M-LOK, 4.5" Barrel, SIG Folding Brace, Timney Trigger - PMPX4B935 is a complete rifle. Compare prices from multiple merchants and find the best deal.

Specifications

MPNPMPX4B935
PlatformAR-9
Caliber9mm
Gas System LengthPistol
Thread PitchM13.5x1 LH
Action TypeSemi-Auto
Twist Rate1:10
ColorBlack
Barrel Length4.5
ComplianceStandard

Available Merchants(2)

Prices checked

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Brownells
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$2,199.99
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Sportsmans Outdoor Superstore
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$2,199.99

October 2026 on GunPartPicker

SIG Sauer MPX K, Semi-Automatic Pistol, M-LOK, 4.5" Barrel, SIG Folding Brace, Timney Trigger - PMPX4B935 ranked #26 of the 207 complete rifles builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #74 of the 609 complete rifles builders have added.

Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today only Brownells has it in stock. Prices barely moved in October 2026, holding around $2,199.99, with no real sale all month. Buying today, the lowest price is $2,199.99 at Brownells, which matches the best price we saw in October.

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