{"product_id":"monstrum-mossberg-500-590-shell-holder-picatinny-rail-mount","title":"Mossberg 500\/590 Side Saddle Shell Holder with Picatinny Rail Mount – 6 Round 12 Gauge Carrier","description":"\u003cp data-start=\"623\" data-end=\"1025\"\u003eEnhance your Mossberg shotgun with the \u003cstrong data-start=\"662\" data-end=\"737\"\u003eMonstrum Side Mounted Shell Holder with Integrated Picatinny Rail Mount\u003c\/strong\u003e, designed for quick-access reloading and tactical versatility. Compatible with \u003cstrong data-start=\"817\" data-end=\"870\"\u003eMossberg 500, 535, 835, 590, 590A1, and Shockwave\u003c\/strong\u003e shotguns, this rugged side saddle securely holds up to \u003cstrong data-start=\"926\" data-end=\"949\"\u003esix 12 gauge shells\u003c\/strong\u003e while providing a stable Picatinny rail platform for optics or accessories.\u003c\/p\u003e\n\u003cp data-start=\"1027\" data-end=\"1362\"\u003eBuilt from lightweight, high-strength polymer and precision-machined components, this shell carrier is engineered for dependable retention under recoil and rapid shell access when every second matters. The ambidextrous design allows installation on either side of the receiver, making it ideal for both left- and right-handed shooters.\u003c\/p\u003e\n\u003cp data-start=\"1364\" data-end=\"1573\"\u003eThe two-piece integrated system mounts directly to factory receiver holes with no gunsmithing required on compatible Mossberg models. Perfect for tactical setups, home defense, hunting, and range applications.\u003c\/p\u003e\n\u003chr data-start=\"1575\" data-end=\"1578\"\u003e\n\u003ch1 data-section-id=\"u0ybrq\" data-start=\"1580\" data-end=\"1594\"\u003eKey Features\u003c\/h1\u003e\n\u003cul data-start=\"1596\" data-end=\"2076\"\u003e\n\u003cli data-section-id=\"hv7nax\" data-start=\"1596\" data-end=\"1645\"\u003eHolds up to \u003cstrong data-start=\"1610\" data-end=\"1645\"\u003e6 rounds of 12 gauge ammunition\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1htv7k9\" data-start=\"1646\" data-end=\"1693\"\u003eCompatible with \u003cstrong data-start=\"1664\" data-end=\"1693\"\u003e2¾” and 3” shotgun shells\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hw0zr3\" data-start=\"1694\" data-end=\"1758\"\u003eIntegrated \u003cstrong data-start=\"1707\" data-end=\"1731\"\u003ePicatinny rail mount\u003c\/strong\u003e for optics and accessories\u003c\/li\u003e\n\u003cli data-section-id=\"19109ye\" data-start=\"1759\" data-end=\"1819\"\u003eFits \u003cstrong data-start=\"1766\" data-end=\"1819\"\u003eMossberg 500, 535, 835, 590, 590A1, and Shockwave\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"15bsb0w\" data-start=\"1820\" data-end=\"1852\"\u003eAmbidextrous side-mount design\u003c\/li\u003e\n\u003cli data-section-id=\"13atv7t\" data-start=\"1853\" data-end=\"1891\"\u003eLightweight and durable construction\u003c\/li\u003e\n\u003cli data-section-id=\"vi584r\" data-start=\"1892\" data-end=\"1942\"\u003eSecure shell retention under recoil and movement\u003c\/li\u003e\n\u003cli data-section-id=\"1usn4sg\" data-start=\"1943\" data-end=\"1974\"\u003eFast-access reload capability\u003c\/li\u003e\n\u003cli data-section-id=\"1fg814d\" data-start=\"1975\" data-end=\"2029\"\u003eDirect-fit installation using factory mounting holes\u003c\/li\u003e\n\u003cli data-section-id=\"18toeuk\" data-start=\"2030\" data-end=\"2076\"\u003eNo gunsmithing required on compatible models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2078\" data-end=\"2081\"\u003e\n\u003ch1 data-section-id=\"1spgaq0\" data-start=\"2083\" data-end=\"2099\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul data-start=\"2101\" data-end=\"2374\"\u003e\n\u003cli data-section-id=\"tkdfd4\" data-start=\"2101\" data-end=\"2124\"\u003e\n\u003cstrong data-start=\"2103\" data-end=\"2113\"\u003eBrand:\u003c\/strong\u003e Monstrum\u003c\/li\u003e\n\u003cli data-section-id=\"vcfbte\" data-start=\"2125\" data-end=\"2198\"\u003e\n\u003cstrong data-start=\"2127\" data-end=\"2145\"\u003eCompatibility:\u003c\/strong\u003e Mossberg 500 \/ 535 \/ 835 \/ 590 \/ 590A1 \/ Shockwave\u003c\/li\u003e\n\u003cli data-section-id=\"1c4wp33\" data-start=\"2199\" data-end=\"2231\"\u003e\n\u003cstrong data-start=\"2201\" data-end=\"2220\"\u003eShell Capacity:\u003c\/strong\u003e 6 Rounds\u003c\/li\u003e\n\u003cli data-section-id=\"plnqlh\" data-start=\"2232\" data-end=\"2288\"\u003e\n\u003cstrong data-start=\"2234\" data-end=\"2258\"\u003eShell Compatibility:\u003c\/strong\u003e 12 Gauge, 2¾” and 3” shells\u003c\/li\u003e\n\u003cli data-section-id=\"gaz5df\" data-start=\"2289\" data-end=\"2309\"\u003e\n\u003cstrong data-start=\"2291\" data-end=\"2302\"\u003eWeight:\u003c\/strong\u003e 4 oz\u003c\/li\u003e\n\u003cli data-section-id=\"h0azpb\" data-start=\"2310\" data-end=\"2330\"\u003e\n\u003cstrong data-start=\"2312\" data-end=\"2323\"\u003eLength:\u003c\/strong\u003e 6 in\u003c\/li\u003e\n\u003cli data-section-id=\"1uda7a9\" data-start=\"2331\" data-end=\"2350\"\u003e\n\u003cstrong data-start=\"2333\" data-end=\"2343\"\u003eWidth:\u003c\/strong\u003e 2 in\u003c\/li\u003e\n\u003cli data-section-id=\"tqwgon\" data-start=\"2351\" data-end=\"2374\"\u003e\n\u003cstrong data-start=\"2353\" data-end=\"2364\"\u003eHeight:\u003c\/strong\u003e 1.75 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2376\" data-end=\"2379\"\u003e\n\u003ch1 data-section-id=\"xwasm0\" data-start=\"2381\" data-end=\"2401\"\u003eCompatibility Note\u003c\/h1\u003e\n\u003cp data-start=\"2403\" data-end=\"2618\"\u003eCompatible with most Mossberg 500 and 590 series shotguns using factory receiver mounting holes.\u003cbr data-start=\"2499\" data-end=\"2502\"\u003e\u003cstrong data-start=\"2502\" data-end=\"2530\"\u003ePre-1997 Mossberg models\u003c\/strong\u003e may require \u003cstrong data-start=\"2543\" data-end=\"2562\"\u003e6x48 TPI screws\u003c\/strong\u003e (not included) due to different mounting hole patterns.\u003c\/p\u003e","brand":"TRINITY SUPPLY INC","offers":[{"title":"Default Title","offer_id":46940984377504,"sku":"2235","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/4193\/3472\/files\/monstrummoss5.jpg?v=1779402774","url":"https:\/\/www.trinitysupply.com\/products\/monstrum-mossberg-500-590-shell-holder-picatinny-rail-mount","provider":"TRINITY SUPPLY INC","version":"1.0","type":"link"}