--- title: Mossberg® Releases 990™ Aftershock™ SPX Semi-Auto Firearm description: Mossberg releases the 990 Aftershock SPX, a compact 12-gauge semi-auto tactical firearm featuring SPX enhancements, M-LOK compatibility, and an optic-ready design. image: https://resources.mossberg.com/hubfs/990%20AfterShock%20SPX_range_ODG_960x480.jpg --- [Law Enforcement](https://lawenforcement.mossberg.com/) [Sign In](https://www.mossberg.com/customer/account/login) / [Sign Up](https://www.mossberg.com/customer/account/create/) [Firearms](https://www.mossberg.com/firearms.html) [Store](https://www.mossberg.com/store.html) [![Mossberg](https://resources.mossberg.com/hubfs/raw_assets/public/mossberg-theme/images/logo.svg)](https://www.mossberg.com) [Support](https://www.mossberg.com/help/) [Journal](https://resources.mossberg.com/journal) [Dealers](https://www.mossberg.com/dealers/) [Cart](https://www.mossberg.com/checkout/cart/) [Sign In](https://www.mossberg.com/customer/account/login) / [Sign Up](https://www.mossberg.com/customer/account/create/) [Dealers](https://www.mossberg.com/dealers/) - [Firearms](https://www.mossberg.com/firearms.html) - [Store](https://www.mossberg.com/store.html) - [Support](https://www.mossberg.com/help/) - [Journal](https://resources.mossberg.com/) [Military/Law Enforcement](https://lawenforcement.mossberg.com/) - [Home](https://www.mossberg.com) - [Journal](https://resources.mossberg.com/journal) - Mossberg® Releases 990™ Aftershock™ SPX Semi-Auto Firearm [Product](https://resources.mossberg.com/journal/tag/product) # Mossberg® Releases 990™ Aftershock™ SPX Semi-Auto Firearm 9 Min Read By [Mossberg](https://resources.mossberg.com/journal/author/admin) ![Mossberg® Releases 990™ Aftershock™ SPX Semi-Auto Firearm](https://resources.mossberg.com/hubfs/990%20AfterShock%20SPX_range_ODG_960x480.jpg) Mossberg is pleased to announce the all-new [990 Aftershock SPX](https://www.mossberg.com/firearms/others/990-aftershock.html), a 12-gauge, 3-inch semi-auto tactical firearm that enhances the compact Aftershock platform with advanced SPX-level features. Small in size yet big on performance, the 990 Aftershock SPX combines proven Mossberg reliability with modern accessory compatibility and an optic-ready design. This highly maneuverable platform is available with 14.75-inch or 18.5-inch barrel options. ![990 AfterShock SPX Trio](https://resources.mossberg.com/hs-fs/hubfs/990%20AfterShock%20SPX%20Trio.jpg?width=960&height=480&name=990%20AfterShock%20SPX%20Trio.jpg) At the core of the 990 Aftershock SPX is a durable gas-operating system fully contained within the forend, engineered for consistent, reliable cycling. Critical internal components—including the gas piston, magazine tube, hammer, and sear—feature nickel-boron coatings and specialized finishes for enhanced corrosion resistance and smooth operation. Performance features include an enlarged and beveled loading port, elongated pinch-free elevator, and a high-visibility anodized orange follower. The oversized, ergonomic top-mounted safety is easily operated by both left- and right-handed shooters and includes a clearly visible red indicator. Enhancing versatility, the 990 Aftershock SPX incorporates the SPX handguard shared with the 940® Pro Tactical SPX, offering a rigid, heat-resistant design with integrated M-LOK® mounting slots for accessories. Controls are optimized for confident operation and include a knurled charging handle, oversized paddle-style bolt release, and an optimized tang-mounted safety.   ![990 AfterShock SPX FDE](https://resources.mossberg.com/hs-fs/hubfs/990%20AfterShock%20SPX%20FDE.jpg?width=960&height=480&name=990%20AfterShock%20SPX%20FDE.jpg) Further distinguishing the SPX, the 990 Aftershock SPX features the same optic-ready receiver cut as the 940 Pro Tactical SPX, allowing for direct mounting of micro-dot optics. A winged front fiber optic sight completes the sighting system, delivering fast target acquisition and seamless optic compatibility. The exterior design reflects Mossberg’s focus on ergonomic efficiency and tactical performance. The black synthetic Aftershock grip provides a secure, comfortable hold and features a rubberized palm pad to reduce felt recoil, along with an integrated quick-detachment sling cup. Complementing the grip, the SPX handguard maintains a streamlined profile while delivering exceptional durability. ![990 AfterShock SPX](https://resources.mossberg.com/hs-fs/hubfs/990%20AfterShock%20SPX.jpg?width=960&height=480&name=990%20AfterShock%20SPX.jpg) Completing the 990 Aftershock SPX are 14.75-inch or 18.5-inch Accu-Choke® barrels, 5+1 capacity with 2.75-inch shotshells, and a choice of matte blue metal or Cerakote® finishes. Mossberg continues to deliver innovation, reliability, and exceptional tactical performance with the 990 Aftershock SPX—a premium defensive tool that blends compact handling with modern tactical capability. For more information, please visit [www.mossberg.com](http://www.mossberg.com). 990 Aftershock SPX 6-Shot(Matte Blue): [![990 Aftershock SPX 6-Shot(Matte Blue)](https://resources.mossberg.com/hs-fs/hubfs/83010_990%20Aftershock%20SPX_14.375_960x240.jpg?width=960&height=240&name=83010_990%20Aftershock%20SPX_14.375_960x240.jpg)](https://www.mossberg.com/990-aftershock-spx-83010.html)  990 Aftershock SPX 6-Shot(FDE Cerakote): [![990 Aftershock SPX 6-Shot(FDE Cerakote)](https://resources.mossberg.com/hs-fs/hubfs/83011_990%20Aftershock%20SPX_FDE_14.375_960x240.jpg?width=960&height=240&name=83011_990%20Aftershock%20SPX_FDE_14.375_960x240.jpg)](https://www.mossberg.com/990-aftershock-spx-cerakote-83011.html) ### 990 Aftershock SPX 6-Shot(ODG Cerakote): [![990 AFTERSHOCK SPX 6-SHOT(ODG CERAKOTE):](https://resources.mossberg.com/hs-fs/hubfs/83012_990%20Aftershock%20SPX_ODG_14.375_960x240.jpg?width=960&height=240&name=83012_990%20Aftershock%20SPX_ODG_14.375_960x240.jpg)](https://www.mossberg.com/990-aftershock-spx-cerakote-83012.html) ### 990 Aftershock SPX 8-Shot(Matte Blue): [![990 AFTERSHOCK SPX 8-SHOT(MATTE BLUE)](https://resources.mossberg.com/hs-fs/hubfs/83013_990%20Aftershock%20SPX_18.5_960x240.jpg?width=960&height=240&name=83013_990%20Aftershock%20SPX_18.5_960x240.jpg)](https://www.mossberg.com/990-aftershock-spx-18-5-83013.html) ### Mossberg 990 SPX Magpul Semi-Auto Shotgun Specifications: | ITEM | TYPE | GAUGE  | CAPACITY (2.75 in) | BARREL / FINISH | SIGHTS | CHOKES | OVERALL LENGTH | STOCK / FINISH | APPROX. WEIGHT | MSRP | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | M-LOK® is a registered trademark of Magpul Industries Corp. Cerakote® is a registered trademark of NIC Industries, Inc. | | | | | | | | | | | | 83010 | 990 Aftershock SPX 6-Shot | 12GA 3 in | 5+1 | 14.75 in Matte Blue | Winged FO Front Sight Optic Ready | Accu-Choke Cylinder | 27.13 in | Aftershock Grip SPX Forend M-LOK Black Synthetic | 6 lbs | $1,204 | | 83011 | 990 Aftershock SPX 6-Shot | 12GA 3 in | 5+1 | 14.75 in FDE Cerakote | Winged FO Front Sight Optic Ready | Accu-Choke Cylinder | 27.13 in | Aftershock Grip SPX Forend M-LOK Black Synthetic | 6 lbs | $1,260 | | 83012 | 990 Aftershock SPX 6-Shot | 12 GA 3 in | 5+1 | 14.75 in ODG Cerakote | Winged FO Front Sight Optic Ready | Accu-Choke Cylinder | 27.13 in | Aftershock Grip SPX Forend M-LOK Black Synthetic | 6 lbs | $1,260 | | 83013 | 990 Aftershock SPX 8-Shot | 12GA 3 in | 7+1 | 18.5 in Matte Blue | Winged FO Front Sight Optic Ready | Accu-Choke Cylinder | 30.88 in | Aftershock Grip SPX Forend M-LOK Black Synthetic | 6.3 lbs | $1,204 | [![Share on Facebook](https://resources.mossberg.com/hs-fs/hubfs/SocialShare/share-facebook.png?width=24&name=share-facebook.png)](http://www.facebook.com/share.php?u=https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on LinkedIn](https://resources.mossberg.com/hs-fs/hubfs/SocialShare/share-linkedin.png?width=24&name=share-linkedin.png)](http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on Twitter](https://resources.mossberg.com/hs-fs/hubfs/SocialShare/share-twitter.png?width=24&name=share-twitter.png)](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=Mossberg%C2%AE%20Releases%20990%E2%84%A2%20Aftershock%E2%84%A2%20SPX%20Semi-Auto%20Firearm) [![Share on Email](https://resources.mossberg.com/hs-fs/hubfs/SocialShare/share-email.png?width=24&name=share-email.png)](mailto:?subject=Check%20out%20https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Demail%20&body=Check%20out%20https%3A%2F%2Fresources.mossberg.com%2Fjournal%2Fmossberg-releases-990-aftershock-spx-semi-auto-firearm%3Futm_medium%3Dsocial%26utm_source%3Demail) ## Related Posts [![990™ SPX Magpul®®](https://resources.mossberg.com/hs-fs/hubfs/990%20SPX%20MAGPUL_Shooting1_960x480.jpg?width=352&name=990%20SPX%20MAGPUL_Shooting1_960x480.jpg)](https://resources.mossberg.com/journal/mossberg-introduces-990-spx-magpul-semi-auto-shotgun) ### [Mossberg® Introduces 990™ SPX Magpul® Semi-Auto Shotgun](https://resources.mossberg.com/journal/mossberg-introduces-990-spx-magpul-semi-auto-shotgun) Mossberg is proud to introduce the [990 SPX Magpul](https://www.mossberg.com/firearms/shotguns/990.html), a 12-gauge, 3-inch semi-auto tactical shotgun... [![New 990 AfterShock](https://resources.mossberg.com/hs-fs/hubfs/aftershock.jpg?width=352&name=aftershock.jpg)](https://resources.mossberg.com/journal/mossberg-releases-990-aftershock-semi-auto-firearm) ### [Mossberg® Releases 990 Aftershock™ Semi-Auto Firearm](https://resources.mossberg.com/journal/mossberg-releases-990-aftershock-semi-auto-firearm) Following on the unprecedented success of the Mossberg 590® Shockwave pump action, Mossberg is... [![](https://resources.mossberg.com/hs-fs/hubfs/press_releases/590%20Bliksem_African%20Setting_960x480.jpg?width=352&name=590%20Bliksem_African%20Setting_960x480.jpg)](https://resources.mossberg.com/journal/mossberg-introduces-special-edition-590-bliksem-pump-action-firearm) ### [Mossberg ® Introduces Special Edition 590 ® Bliksem™ Pump-Action Firearm](https://resources.mossberg.com/journal/mossberg-introduces-special-edition-590-bliksem-pump-action-firearm) O.F. Mossberg & Sons, Inc. is proud to announce the release of the new [Mossberg® 590® Bliksem™,](https://www.mossberg.com/firearms/others/590-bliksem.html) a... [Sign Up for Mossberg News and Updates](https://resources.mossberg.com/join) [Facebook](https://www.facebook.com/MossbergCorp) [Twitter](https://www.x.com/mossberghunting) [Youtube](https://www.youtube.com/user/mossbergofficialsite) [Instagram](https://www.instagram.com/mossberghunting) #### [Firearms](https://www.mossberg.com/firearms.html) - [Handguns](https://www.mossberg.com/firearms/handguns.html) - [Shotguns](https://www.mossberg.com/firearms/shotguns.html) - [Rifles](https://www.mossberg.com/firearms/rifles.html) - [Other](https://www.mossberg.com/firearms/others.html) #### [Store](https://www.mossberg.com/store.html) - [Parts](https://www.mossberg.com/parts.html) - [Shop By Schematic](https://www.mossberg.com/schematics/) - [Apparel](https://www.mossberg.com/apparel.html) - [Accessories](https://www.mossberg.com/gear.html) #### [Support](https://www.mossberg.com/help) - [FAQ](https://www.mossberg.com/support/faqs) - [Contact us](https://www.mossberg.com/contact-us) - [Firearms Service Request](https://www.mossberg.com/service/request/index) - [Warranty Registration](https://www.mossberg.com/support/warranty-registration) - [Vintage Models](https://www.mossberg.com/support/vintage-models.html) - [Owner's Manuals](https://www.mossberg.com/support/owners-manuals) - [Recalls](https://www.mossberg.com/support/recalls) - [Privacy Center](https://www.mossberg.com/privacy-center) #### [Military/Law Enforcement](https://lawenforcement.mossberg.com/) - [Product](https://www.mossberg.com/firearms/military-le.html) - [Agency T&E](https://www.mossberg.com/law-enforcement/firearm-testing-evaluation) - [Distributors](https://www.mossberg.com/law-enforcement/distributors/) - [Service & Support](https://www.mossberg.com/law-enforcement/le-service-support) - [Armorer Training](https://www.mossberg.com/law-enforcement/armorer-training) #### Corporate - [About](https://www.mossberg.com/corporate/about) - [Careers](https://www.mossberg.com/corporate/careers) - [Safety](https://www.mossberg.com/corporate/safety) - [Press Releases](https://www.mossberg.com/corporate/press-releases) - [Media Kit](https://mossberg.app.box.com/s/gnjcxzwo3tws3dovf7cii4xzu52tbu2i) - [International](https://www.mossberg.com/corporate/international) O.F. Mossberg & Sons, Inc. © Copyright 2026 [Privacy Policy](https://www.mossberg.com/privacy-policy) [Terms of Use](https://www.mossberg.com/terms-of-use) By entering this website, you verify that you accept the Mossberg Website [Terms of Use](https://www.mossberg.com/terms-of-use), including but not limited to the requirement that you are of legal age to purchase firearms in the state which you reside.