J Arsenal Piston Gravity Bong is a compact, handmade borosilicate glass gravity water pipe featuring a piston-style sliding core and built-in disc percolator. Its gravity slide mechanism creates airflow through the chamber, while the disc percolator provides water filtration. The system includes a removable 14mm glass slide and is compatible with standard 14mm bowls.
Not sure if this is the right size for your setup? Read our guide on choosing the perfect bong size to understand how different water pipe sizes affect portability, filtration, and overall use.
Features & Specifications
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Material: 100% Borosilicate Glass
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Height (With Bowl): 8.75"
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Height (Without Bowl): 7.75"
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Width: 3.5"
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Joint Size: 14mm
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Filtration: Disc Percolator
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Function: Gravity Slide System
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Construction: Handmade Glass
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Seal: Silicone Gasket
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Compatibility: Standard 14mm Bowls
What's in the Box
- 1 × Piston Glass Shell
- 1 × Piston Glass Core with Disc Perc
- 1 × Piston Glass 14mm Slide
- 1 × Silicone Gasket
How the Piston Gravity Slide Works
Unlike a conventional water pipe, the Piston uses movement of its inner glass core through water to create gravity-assisted airflow. MJ Arsenal recommends adding enough water to allow the inner chamber to move without overflowing, gradually lifting the chamber, and removing the bowl before lowering it.
The movement and water level can take practice to get right. Several owners of the MJ Arsenal Piston report an initial learning curve with timing and water levels, making this an important consideration for buyers who prefer a simpler, fixed-chamber water pipe.
Cleaning and Handling the Glass Components
The Piston's modular construction allows its glass shell, inner core, removable 14mm slide, and silicone gasket to be separated. MJ Arsenal confirms that the main glass components can be cleaned individually, providing access to areas that would otherwise be difficult to reach.
Although the Piston has a compact footprint, its glass construction and water-operated mechanism require careful handling. MJ Arsenal also notes that gravity water pipes are not always the most convenient option for travel, making the Piston particularly suitable for buyers who prefer a stationary setup.
