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$299.99
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Shipped & sold by Pyramyd AIR
1-year limited warranty
60 day money back guarantee
Description
The Barra 400e Polymer Full Auto BB Rifle is budget friendly brother to the 400e Gen 2. By replacing the upper, lower, handguard, and faux suppressor with polymer materials, Barra is able to offer a lighter and more affordable option to the original 400e Gen 2 without sacrificing performance.
This BB rifle receives all of its power from a Lithium Polymer (LiPo) battery. It reaches velocities up to 430 FPS and a cyclic rate of approximately 550 rounds per minute (RPM) to deliver intense action and limitless enjoyment for plinking and fun target practice.
The heart of this BB gun is the Lithium Polymer battery that provides consistent power and operation compared to the CO2 cartridges found in competing airguns, meaning it performs well over long shooting sessions and in a variety of temperatures. With the ambidextrous select-fire switch, this BB gun easily shifts from semi-auto to full-auto (and safe mode), allowing shooters to either get semi-auto shots for careful placement, or to empty the 100-round magazine in just over five seconds with exciting full-auto shots.
The Barra 400e Polymer Full Auto includes flip up front and rear sights that can be removed and repositioned. In addition, the rear peep sight is adjustable for windage, and the BB gun has a long Picatinny optics rail for adding a scope. To provide further options, the Polymer handguard has M-LOK slots on the bottom and both sides for accessories such as bipods, flashlights, and lasers.
This BB gun has an AR-style textured pistol grip and a custom 6-position adjustable butt stock for variable length of pull. For convenience, the butt stock includes a quick-disconnect sling mount, and the package comes with both a balanced battery charger and a speed loader to make filling the magazine simple.
To get a truly unique and exhilarating AEG BB gun shooting experience, buy the Barra 400e Polymer Full Auto BB Rifle from Pyramyd AIR today.
Barra 400e Polymer Full Auto BB Rifle
- Automatic electric gun (AEG)
- Full-auto/semi-auto
- Uses .177 caliber steel BBs
- Polymer upper, lower, handguard, and faux suppressor
- 100-round magazine
- Over 1000 shots per charge
- Approximately 550 rounds per minute
- Max. velocity: 430 FPS
- Textured AR-style pistol grip
- Manual safety
- Picatinny optics rail
- Flip up front post sight
- Flip up windage-adjustable rear peep sight
- Custom 6-position adjustable stock
- M-LOK accessory slots on sides and bottom of handguard
- Quick-disconnect sling mount
- Combo Includes battery, balanced charger, and speed loader
- Barrel length: 18"
- Overall length: 32.5"
- Weight: 5.2 lbs.
Specifications
Ballistic & Conversion Calcs
Overall Rating
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10 of 40 Barra 400E Polymer Reviews

I just unboxed my 400e polymer yesterday and I am really liking this gun. I have been an air gun fan since i first barrowed a neighbors lever action Daisy BB gun at 6 years old. this electric platform is awesome for just sitting around and plinking without having to blow off C02 carts or excessive pumping. This is an all around fun purchase.

did not work with 50 round metal magazines from the gen 1

Very well made. Bb's travel at good speed and hit well. Bb feeding system seems weak, between magazine and loading points. Less than reliable.

I received my 400e approximately a week ago and very impressed with the quality of this electric BB gun. I have been shooting targets and have no complaints so far. The 400e is a bit heavier than I thought it would be but that is not a concern since this is just for targets and plinking cans in my backyard.

fast and powerful!!! Jams a lot and i use the barra BBs recommended by manufacturer.

Nice really cool looking and hasn’t jammed yet Hope gen 3 will be more powerful

wonderful toy, however I bought the H20 3-9x32 BDC Reticle Rifle Scope I can't attached it to the rifle, there are no brackets to attached it and I don't see any brackets to purchase anything. No very good sale strategy.

Not a bad purchase. Capacity and landing is fair. Could be better. Takes a few to get used to overall good.

I feel like Scarface.lol I bought two. One for me and one for my daughter boyfriend. And we love it. Feel like a real gun. Heavy.
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We can test and adjust your equipment in our Pro Shop before shipping, so you receive a product that's ready to perform right out of the box. We can even set up an optic or other equipment so you can get out shooting without the hassle. For bowhunters, our certified master bow technicians provide services such as assembly, optics zeroing, and full equipment setup, which can maximize the potential of your purchase.
By leveraging our expertise and precision, we ensure that your equipment is finely tuned to meet your specific needs and get you ready for your outdoor pursuits. So look out for our services when shopping for something new, and let our experts help you get the most from your outdoor adventures.
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Aug 10, 2025
By Andrew
I was supposed to get a discount code on my next purchase which didn’t work.