The BCI Buffer Tube fits perfectly for the A&K M249, MK46 and the Lambda MK48 and works on HPA or AEG builds. This a lightweight and sturdy buffer tube, designed to reduce weight on your replica without sacrificing strength and durability. It allows multiple stock options, routing for the HPA line and has dropped 1.2 pounds in overall weight.

4oz. vs. Original Buffer Tube = 2lbs! 

THIS IS COMPATIBLE WITH THE LAMBDA MK48!