{"product_id":"mj-arsenal-piston-gravity-bong","title":"MJ Arsenal Piston Gravity Bong","description":"\u003cp\u003eThe MJ Arsenal Piston Gravity Bong is a handmade borosilicate glass \u003ca href=\"https:\/\/vgear.com\/collections\/pipes-chillums\"\u003ewater pipe\u003c\/a\u003e built around a gravity-powered mechanism and a first-of-its-kind disc percolation system. The piston-shaped core slides down through the outer shell, using gravity and water displacement to pull a dense, filtered hit — a significant step up from traditional bucket-style gravity bongs.\u003c\/p\u003e\n\n\u003cp\u003eBoth pieces are made from premium borosilicate glass and separate completely, so cleaning is straightforward. A 14mm slide is included in the box, and the standard joint accepts any aftermarket 14mm bowl. Browse the full range of \u003ca href=\"https:\/\/vgear.com\/collections\/for-dry-herb\"\u003edry herb accessories\u003c\/a\u003e to complete your setup.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does a gravity bong work?\u003c\/strong\u003e You fill the outer shell with water, pack the slide, and slowly lift the core upward. Negative pressure draws smoke into the chamber as the core rises. Remove the slide and push the core back down to inhale the collected smoke.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes the disc percolator different?\u003c\/strong\u003e Most gravity bongs have no filtration at all — smoke goes straight into the chamber. The Piston adds a disc perc at the base of the core, which breaks smoke into fine bubbles and filters it through water before it reaches the chamber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat joint size does it use?\u003c\/strong\u003e 14mm. The included slide is 14mm, and it accepts any standard 14mm male bowl as a replacement or upgrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat's in the box?\u003c\/strong\u003e The glass shell, the glass core with disc perc, a 14mm glass slide, and a silicone gasket. Everything needed to use it immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the silicone gasket for?\u003c\/strong\u003e It creates an airtight seal between the core and shell so the gravity mechanism works correctly. Without it, air leaks in and the draw becomes weak and inconsistent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow do you clean it?\u003c\/strong\u003e The core and shell separate fully, so both can be soaked in isopropyl alcohol independently. The disc perc benefits from a pipe cleaner or syringe to clear the holes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow tall is it?\u003c\/strong\u003e 8.75\" with the bowl attached, 7.75\" without. The shell is 3.5\" wide.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTotal beginner? Read this\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is a gravity bong?\u003c\/strong\u003e A gravity bong uses the weight of water (or a rising inner chamber) to create suction that pulls smoke into a container. It produces a denser, more concentrated hit than a standard pipe or bubbler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat does a disc percolator do?\u003c\/strong\u003e A perc forces smoke through water for filtration. A disc perc is a flat disc with small holes — smoke passes through as fine bubbles, which increases the water-contact surface area, cooling and smoothing the hit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is borosilicate glass?\u003c\/strong\u003e A glass formulated to resist thermal shock — it handles rapid temperature changes without cracking. It's also chemically inert, so it won't affect flavor over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs a gravity bong harder to use than a regular pipe?\u003c\/strong\u003e Slightly. There's a technique to pacing the lift and push. One or two sessions is usually enough to get comfortable with the rhythm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much water do I add?\u003c\/strong\u003e Enough to submerge the base of the core when fully lowered, but not so much that water floods into the core. Start with the shell about halfway full and adjust from there.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MJ Arsenal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 100% Borosilicate Glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight (with bowl):\u003c\/strong\u003e 8.75\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight (without bowl):\u003c\/strong\u003e 7.75\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoint Size:\u003c\/strong\u003e 14mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePercolator:\u003c\/strong\u003e Disc Perc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanism:\u003c\/strong\u003e Gravity slide (piston-style)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Any 14mm Flower Bowl\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging Size:\u003c\/strong\u003e 9.5\" x 8.5\" x 4.25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Handmade\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MJ Arsenal","offers":[{"title":"Default Title","offer_id":49783348068589,"sku":"MJA-WP-GRVTYBNG-CLR","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6144\/1517\/files\/mj-arsenal-piston-gravity-bong-3.jpg?v=1776190321","url":"https:\/\/vgear.com\/products\/mj-arsenal-piston-gravity-bong","provider":"VGEAR","version":"1.0","type":"link"}