400e Collection

The Metal has a CNC aluminum upper, lower, handguard and faux suppressor. It weighs 6.98 lbs and is 32 inches long. The Polymer uses polymer for those parts, so it is lighter at 5.2 lbs and 30.25 inches long. Inside, they share the same components, both shoot up to 440 fps and both have M-LOK slots and a 6-position adjustable stock. Choose the Metal for a heavier, more solid feel, or the Polymer for a lighter, budget-friendly option.

Use .177 steel BBs only. Gen 2 rifles sold from July 2025 on have the Standard barrel, which handles a broad range of steel BBs. Rifles bought between October 2024 and June 2025 came with the tighter Precision barrel, and for those Barra strongly recommends its zinc-plated .177 BBs. The refurbished Metal rifles should use only Barra zinc-coated steel BBs.

The Standard barrel is less sensitive to small flaws in BB shape or finish, so it suits casual shooting and high-volume use with a wide range of steel BBs. The Precision barrel is built to tighter tolerances for better accuracy and consistency, but needs Barra zinc-plated BBs to feed reliably. Buy the kit that matches your rifle: the Metal uses a 405mm barrel and the Polymer a 357mm barrel.

Each new 400e includes an 11.1V LiPo battery, a USB balanced charger, a 50-round magazine, a speed loader and flip-up sights. That is everything you need to start shooting once the battery is charged, apart from BBs. New rifles carry Barra's 1-year limited warranty. If you want more time between reloads, a 100-round magazine is also available.

Only one that matches the specs. The 400e takes a 3S (11.1V) LiPo battery rated 25-35C with a Deans (T-plug) connector, and it stores in the buttstock. A battery outside those specs can hurt performance and shorten the rifle's life. Barra's 11.1V 2200mAh LiPo is built for it. The spare is sold without a charger, so use the balanced charger that came with your rifle.

A refurbished 400e Metal has been inspected and tested by Barra's team so it performs like new. They come in three conditions: Like New, Good (minor cosmetic damage) and Acceptable (moderate cosmetic damage). Refurbished rifles carry a 30-day limited warranty instead of the 1-year warranty on new ones. You can find them here or in the Certified Refurbished collection.