What is the Bang Bag?
The Bang Bag is a tactical shoulder sling bag inspired by iconic WWII-era gas mask bags, combining vintage military design with modern functionality. Part of the Mountain Partisan gear line, this versatile satchel features laser-cut MOLLE panels for unlimited customization, magnetic closure for quick access, and internal organization including dual water bottle pouches. Whether you need an everyday carry solution, hiking companion, or grab-and-go emergency bag, the Bang Bag adapts to urban and backcountry environments with equal capability.
Enhance your Bang Bag with modular accessories:
Also consider: Junk Sack | Alpine Bag
Vintage Military Heritage Meets Modern Tactical Design
The Bang Bag draws direct inspiration from the simple, functional canvas bags carried by soldiers during World War II for storing gas masks and essential survival equipment. Made famous by Indiana Jones in his globe-trotting adventures, these military satchels represented practical, no-nonsense design focused on accessibility and durability in demanding conditions. The Bang Bag honors this heritage while incorporating twenty-first-century materials and features that expand its versatility far beyond its historical predecessor. This is a bag that looks at home whether you're exploring urban environments, hiking backcountry trails, or navigating everyday life with purpose and preparedness.
At the core of the Bang Bag's design philosophy is the Mountain Partisan principle: gear should be simple, effective, rugged, multipurpose, and low-visibility. The magnetic closure system eliminates noisy zippers and provides instant access to your contents with one hand. Laser-cut MOLLE side panels transform the bag from a simple satchel into a modular platform that accommodates pouches, holsters, tool organizers, and mission-specific accessories. The quick-adjust thumb loop allows you to modify strap length on the fly without removing the bag, while the included anti-sway stabilizer strap keeps everything secure during movement. An external top handle provides grab-and-go portability when you need to move fast.
Inside, the Bang Bag delivers thoughtful organization with dual internal pouches sized for thirty-two-ounce water bottles, leaving ample additional space for snacks, medical equipment, electronics, or everyday essentials. The external rear pouch accepts modular inserts designed for specific gear configurations—including magazine organizers for AR-15 or AR-10 platforms and a general-purpose zippered compartment. Two ten-inch shock cord strands come included for additional lashing or organization. Whether you're building an everyday carry loadout, assembling a grab-and-go emergency kit, or outfitting a lightweight hiking setup, the Bang Bag provides the foundation for a system that adapts to your needs rather than forcing you to adapt to the bag.
Key Features
- WWII Gas Mask Bag Design Heritage: Classic military silhouette inspired by iconic canvas bags carried by soldiers and made famous by Indiana Jones
- Laser-Cut MOLLE Side Panels: Modular attachment system allows unlimited customization with MOLLE-compatible pouches, holsters, and accessories
- Magnetic Closure System: Quick, quiet access to main compartment without fumbling with noisy zippers or buckles
- Dual Water Bottle Pouches: Internal organization includes two pouches designed for 32-ounce water bottles with room for additional gear
- Quick-Adjust Thumb Loop: On-the-go strap length adjustment without removing the bag for perfect fit during any activity
- Anti-Sway Stabilizer Strap: Included strap prevents bag movement during running, hiking, or active use
- Modular Rear Pouch: External back pocket accepts optional magazine inserts or zippered organizer for mission-specific configurations
- External Carry Handle: Top-mounted grab handle for quick portability and vehicle storage
- Crossbody/Shoulder Sling Design: Comfortable hands-free carry that distributes weight evenly and keeps contents accessible
Mountain Partisan Design Philosophy
The Mountain Partisan gear line represents Shield Arms' commitment to equipment designed for guerrilla fighters and backcountry operators working in rugged, mountainous terrain. Every piece adheres to core principles that prioritize real-world functionality over tactical aesthetics. Mountain Partisan gear must be simple enough to use under stress without training, effective in proven real-world applications, rugged enough to withstand hard use in austere environments, multipurpose to reduce the amount of specialized gear required, low-visibility to blend with natural surroundings, and field-proven through testing in demanding backcountry conditions. The Bang Bag embodies these principles in a package that serves civilians and professionals alike.
Made in Montana with Lifetime Warranty
The Bang Bag is manufactured in Montana as part of the Mountain Partisan gear line, combining Shield Arms' tactical design expertise with quality American manufacturing standards. Every Bang Bag is backed by Mountain Partisan's lifetime warranty against defects in workmanship, materials, and manufacturing. If something isn't right with your Mountain Partisan gear, Shield Arms will make it right—no questions asked, no time limits.
Technical Specifications
| Specification |
Details |
| Product Type |
Tactical Shoulder Sling / Crossbody Bag |
| Design Inspiration |
WWII Gas Mask Bag |
| Carry Style |
Shoulder Sling / Crossbody |
| Closure System |
Magnetic |
| MOLLE Compatibility |
Laser-cut side panels for modular attachments |
| Internal Organization |
2x pouches for 32 oz. water bottles + additional storage |
| External Storage |
Rear pouch (modular inserts sold separately) |
| Strap Adjustment |
Quick-adjust thumb loop system |
| Stabilization |
Anti-sway strap included |
| External Handle |
Top carrying handle |
| Included Accessories |
Anti-sway strap, 2x 10-inch shock cords (1/8-inch) |
| Optional Accessories |
Magazine inserts (5.56/3-slot, .308/2-slot), general purpose zipper insert |
| Product Line |
Mountain Partisan by Shield Arms |
| Manufacturing Location |
Made in Montana, USA |
| Warranty |
Lifetime |
Modular Customization System
MOLLE (Modular Lightweight Load-carrying Equipment) is the military standard attachment system that revolutionized how soldiers configure their gear. The Bang Bag's laser-cut MOLLE panels on both side surfaces allow you to attach any MOLLE-compatible accessories to create a personalized loadout. Add medical pouches for first aid supplies, holster systems for tools or firearms, utility pouches for electronics, or specialized organizers for photography equipment. The modular design means the Bang Bag grows and adapts with your needs rather than becoming obsolete when requirements change. This is the same attachment system trusted by military forces worldwide, now available for civilian use.
Rear Pouch Accessory Options
The external rear compartment accepts modular inserts that transform the Bang Bag for specific applications. The 5.56 Magazine Insert organizes three AR-15 or M4 magazines for range days or tactical applications. The .308 Magazine Insert holds two AR-10 or .308 magazines plus an additional slot for smaller items. For general use, the General Purpose Zipper Insert provides secure zippered storage for miscellaneous gear, documents, or electronics. These inserts install and remove quickly, allowing you to reconfigure the Bang Bag between different activities or missions.
Frequently Asked Questions
What size items can I carry in the Bang Bag?
The Bang Bag's main compartment includes two internal pouches sized for 32-ounce water bottles, with additional space remaining for snacks, medical supplies, electronics, or everyday carry items. The bag comfortably holds a day's worth of essentials for hiking, urban exploration, or emergency preparedness. The external rear pouch adds organization for flat items like magazines, documents, or additional accessories depending on which insert you choose.
Is the Bang Bag suitable for concealed carry?
While the Bang Bag can accommodate certain concealed carry configurations when paired with appropriate holsters attached to the MOLLE panels, Shield Arms manufactures the Junk Sack specifically for quick-access concealed carry with a magnetic retention system. The Bang Bag is optimized for everyday carry, hiking, and general tactical applications rather than primary concealed carry use.
How do the optional magazine inserts work?
The rear external pouch accepts modular inserts that slide into the compartment and secure in place. The magazine inserts are designed to organize and retain AR-15 (5.56) or AR-10 (.308) magazines vertically for quick access. The 5.56 version holds three standard magazines, while the .308 version accommodates two larger magazines plus a small item slot. These inserts are sold separately and can be swapped based on your needs.
Can I wear the Bang Bag for extended hiking or outdoor activities?
Yes. The Bang Bag is specifically designed for backcountry use and extended wear. The quick-adjust thumb loop allows you to fine-tune strap length without removing the bag, while the included anti-sway stabilizer strap prevents bouncing or shifting during active movement. The crossbody/shoulder sling design distributes weight comfortably and keeps the bag accessible whether you're hiking trails, scrambling over terrain, or navigating urban environments.
What makes the Bang Bag different from a regular messenger bag?
The Bang Bag combines tactical features with the classic military satchel form factor. Unlike civilian messenger bags, it features laser-cut MOLLE panels for attaching modular accessories, a magnetic closure instead of vulnerable zippers, modular rear pouch inserts for mission-specific gear, an anti-sway stabilization system, and construction designed to meet Mountain Partisan's rugged-use standards. It's built for hard use in demanding environments, not just carrying a laptop to the coffee shop.
What is the Mountain Partisan gear line?
Mountain Partisan is Shield Arms' product line designed for guerrilla fighters and backcountry operators working in rugged mountainous terrain. The design philosophy prioritizes simplicity, effectiveness, ruggedness, multipurpose functionality, low visibility, and field-proven performance. Every Mountain Partisan product, including the Bang Bag, adheres to these principles to create gear that works reliably in austere conditions without unnecessary complexity.
Why is it called the "Bang Bag"?
The name reflects the bag's dual-purpose versatility. It's equally at home carrying everyday essentials while you "bang around town" or serving as a problem-solver when things go "bang"—whether on the shooting range, during emergency situations, or in demanding field conditions. The name captures the bag's readiness for both mundane and critical applications.
Does the magnetic closure stay secure during physical activity?
Yes. The magnetic closure system is engineered to remain securely closed during running, hiking, climbing, and other active pursuits while still allowing quick one-handed access when needed. The magnets provide enough retention to prevent accidental opening but release easily with intentional force. This design eliminates the noise and fumbling associated with zippers while maintaining security.
Can I attach pouches or accessories to the Bang Bag?
Absolutely. The laser-cut MOLLE panels on both sides of the Bang Bag accept any MOLLE-compatible pouches, holsters, organizers, or accessories. This allows unlimited customization based on your specific needs. Attach medical pouches, utility organizers, holster systems, or tool pouches to create a personalized loadout that adapts as your requirements change.
Is the Bang Bag water-resistant or waterproof?
The materials and construction provide weather resistance for protection against light rain and moisture, but the Bang Bag is not fully waterproof for submersion or heavy downpours. For extended exposure to wet conditions, consider using dry bags or waterproof pouches for sensitive items inside the main compartment.
Does Shield Arms make other bags similar to the Bang Bag?
Yes. Shield Arms manufactures several bags for different applications. The Junk Sack is a quick-access concealed carry fanny pack with magnetic retention, while the Alpine Bag offers expanded capacity for range days or longer outdoor activities. All Shield Arms bags are made in the USA and backed by lifetime warranties.
What warranty does the Bang Bag come with?
Every Bang Bag is backed by Mountain Partisan's lifetime warranty against defects in workmanship, materials, and manufacturing. If you experience any issues with your Bang Bag at any point during its life, Shield Arms will repair or replace it at no charge. This warranty reflects the quality standards of American manufacturing and our confidence in the product's durability.
Who Should Buy the Bang Bag
- EDC enthusiasts seeking a versatile, low-profile shoulder bag that doesn't scream "tactical" but delivers tactical functionality
- Hikers and outdoor adventurers who need lightweight gear organization for day trips without the bulk of a full backpack
- Urban explorers and travelers wanting a bag that blends in while providing quick access to essentials and water
- Preppers and emergency planners building grab-and-go kits that can be accessed quickly and carried comfortably for extended periods
- Shooters and range users who want a compact bag that can carry ammunition, hearing protection, and accessories with optional magazine organization
- Backcountry operators and guides requiring simple, rugged gear that works reliably in austere mountain environments
- Photography and outdoor professionals needing modular storage that adapts to different equipment requirements
- Military and law enforcement personnel looking for off-duty carry solutions that maintain tactical capability in a civilian form factor
- Vintage military gear enthusiasts who appreciate WWII-era design aesthetics combined with modern materials and features
- Anyone seeking a durable everyday bag that provides more capability than civilian alternatives without looking overtly tactical
Common Use Cases and Applications
The Bang Bag excels in scenarios where you need accessible organization without the bulk or complexity of larger bags. For everyday carry, it holds your wallet, phone, keys, multi-tool, flashlight, and other daily essentials while keeping your hands free. Hikers appreciate the dual water bottle capacity and ability to carry snacks, navigation tools, and first aid supplies for day trips without shoulder strain. Urban travelers use the Bang Bag for guidebooks, cameras, water bottles, and travel documents while maintaining low-visibility in unfamiliar environments. Emergency preparedness enthusiasts build grab-and-go kits with medical supplies, communication devices, and survival essentials that can be accessed instantly. Range users pair the bag with magazine inserts to organize ammunition and shooting accessories for efficient range sessions. The modular MOLLE system allows these configurations to change based on the activity, making the Bang Bag a versatile foundation rather than a single-purpose bag.
Related Products and Accessories
Maximize the functionality of your Bang Bag with these purpose-designed accessories and complementary products from Shield Arms:
- Bang Bag Magazine Shingles - Modular inserts for the rear pouch, available in 5.56 (3-slot) and .308 (2-slot) configurations for organized magazine storage during range days or tactical applications
- Bang Bag Zipper Insert - General purpose zippered compartment for the rear pouch, ideal for documents, electronics, or miscellaneous items requiring secure storage
- Junk Sack - Quick-access concealed carry fanny pack with magnetic retention system for those prioritizing defensive carry capability
- Alpine Bag - Larger capacity bag for extended trips, range days, or situations requiring more gear than the Bang Bag accommodates
All Mountain Partisan products are manufactured in Montana and backed by Shield Arms' lifetime warranty, ensuring you're investing in American-made gear built to last.
