Lambda B&T GHM9-G GBB 2T BK/DE (Works w/h ALL TM System G Series Mags)
 
Fully Licenced By B&T 
Coming with MP5 Style Flash Hider 
Coming with PMAG Style 35rds Glock Magazine
Pistol Grip are same data with normal GBBR, you can replace it easily 
We Tested WE, KJ, TP22, AAP01, VFC, TM G Series Magazine, all working well