Magpul's m3 polymer technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.The over-insertion stop on the spine helps ensure that the magazine will not over-insert on compatible weapons.Usgi-spec stainless steel spring for corrosion resistance and field compatibility.It features aggressive non slip texture at the front and rear for superior grip.Strong, slim floorplate design that retains positive magazine handling and easy disassembly.This 30-round 6.8 spc pmag is for lwrci six8 platform rifles.Caliber: 6.8 SPCCapacity: 5rdFinish: BlackModel: PMAGMaterial: PolymerModel Fit: SIX8Brand Fit: LWRCCapacity: 5