Natively compatible with the M4 CRW and the M4 Patriot.
 
If you don't own either model, don't worry, we have a suitable adapter for your rifle here, including next M4 series, MP5 series, AK series, HK416 series and G3/G36 series.
 
Featuring an impressive storage capacity of 1,200 BB bullets, this magazine is capable of accommodating 600 rounds in each of its dual drums, one on the left and one on the right. A convenient selector on the bottom enables rapid switching between the two drums.
 
What sets it apart is the employment of a double spring mechanism, allowing for effortless winding of the mainspring by merely turning the handle on each drum. This innovative design ensures a continuous and uninterrupted supply of ammunition during your shooting sessions.