Barra
Barra Airguns 400e Gen 2 Full Auto Battery-Powered BB Gun Kit, Includes LiPo Battery and Charger, Fully Automatic Electric BB Rifle - 430 to 440 FPS
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies Barra Airguns 400e Gen 2 Full Auto Battery-Powered BB Gun Kit, Includ… as a mid-pack option worth checking against alternatives in the retro graphics cards category, based on 284 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Barra's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for retro graphics cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.1★ customer rating
- ✓ Backed by Barra's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- FULL AUTOMATIC - More than 100X cheaper to operate than a full auto CO2 air rifle. Constructed with durable polymer materials, offering a rugged yet lightweight frame for easy handling.
- BATTERY POWERED - Using a 3S (11.1V) LiPo battery you can expect over 1000 shots per battery charge! Spend your time actually shooting rather than fumbling with CO2 cartridges. Includes 50 round magazine and speed loader.
- SNIPER LIKE ACCURACY AND SPEED - Highly accurate BB guns featuring patent pending technology. Maintain velocities between 430-440 fps . Rate of fire 500-600 RPM for tactical, high speed fun!
- POWERED BY ELECTRICITY - The first and only production fully automatic BB gun powered completely by electricity. Uses 11.1V Lithium Polymer (LiPo) battery commonly used in RC toys.
- 4X LONGER EXPERIENCE - This fully automatic bb gun has 4X longer shooting than comparable fully automatic CO2 rifles before needing a mag change. Full Auto rate of fire is 500-600 rounds per minute, which gets you over 5 seconds on full-auto.
- This product is protected by U.S. Patent No. 12305954. Barra Airguns actively enforces its intellectual property rights.
Full Specifications
| Brand | Barra |
|---|---|
| Color | Polymer Black |
| Rounds | 50 |
| Caliber | 0.177 |
| Grip Type | Standard |
| Model Name | 4150 |
| Unit Count | 1.0 Count |
| Frame Material | Plastic |
| Air Gun Power Type | Battery |
| Frame Material Type | Plastic |
| Included Components | BB Gun |
| Barrel Material Type | Polymer |
Ready to buy?
Barra Airguns 400e Gen 2 Full Auto Battery-Powered BB Gun Kit, Includes LiPo Battery and Charger, Fully Automatic Electric BB Rifle - 430 to 440 FPS is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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