590 Shockwave 12 GA. 18.5"W/Pistol Grip

Marsoni

M251S

$363.00

Get it in 3 business days with 1 day shipping. Friday, May 29

590 Shockwave 12 GA. 18.5"W/Pistol GripFeatures the Shockwave signature birds head grip, uniquely shaped to minimize felt recoil. Also includes the features that have made Mossberg pump actions the choice for millions worldwide: ambidextrous safety, dual extractors, positive steel to steel lockup, twin action bars, and a smooth operating anti jam elevator. SKU 50639 Gauge 12 Gauge Action Type Pump Action Chamber Size 3" Usage Security Barrel Length 18. 5" Barrel Finish Matte Blue Choke

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Didn't really believe the hype. Did a little research and watched Project Farm and decided to try. Im not a snake oil guy....but I will say my 2013 common rail TDI is quieter and I get a tad more fuel mileage. Does it pay for itself? Well, it does get better mpg, but I feel the reduction in noise most likely relates to less wear and tear and thats good enough for me. Im only using 1oz per fill up (about 14 gallons) so it lasts a very long time. I get 40mpg and im not light footed.

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Reviewed in the United States on April 2, 2026

Verified Purchase

James Jay

Lake Worth, US

★★★★★ 5

It's a spark plug

What i needwd

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Reviewed in the United States on May 27, 2026

Verified Purchase

Houston, US