This is Magpul's PMAG for the Kalashnikov family of AK, AKM and AKS rifles in 7.62x39mm.
The M3 generation PMAG combines Magpul's latest polymer materials technology with further design refinements to offer renowned magazine reliability in all conditions.
Compared to the previous all polymer MOE version the M3 has stainless steel locking lugs and spine inserts for extra durability.
As usual with Magpul it's super reliable, easily strippable for cleaning and very hard-wearing.