Genuine, factory brand Remington Model 870 12 Gauge Magazine Extension Kit increases mag tube capacity by 2 extra rounds, to fit the 18" barrel. All-steel extension tubes attach directly to the end of the magazine tube. Includes a magazine clamp, although that piece is not used with the BPU870 conversion kit. Magazine spring is formed from high strength music wire that resists "set" and won't weaken over time. Matte blued finish.

Made in USA.