Who knows about the SCPM556 from Mission First Tactical?

The MFT Standard Capacity Polymer Magazine, is a 30 round 5.56 NATO magazine engineered as an enhancement of the standard STANAG design. The MFT stipple texture, low profile front ribs and flared floor plate aid in extraction and handling. The floor plate provides drop protection, has a paint pen dot matrix area for easy identification marking and is compatible with tight double and triple magazine pouches. Two fully functional drain holes ensure full and proper draining. Simple tool less disassembly with double floor plate safety release tabs allows user to safely release spring tension during disassembly and quick ammo dumps. Long-life stainless steel spring and four-way anti-tilt follower ensure reliable feeding. Oversized mag catch notch in the rear of the magazine provides enhanced reliability of the bolt catch operation. Quality and consistency are ensured by using a specially developed Military Grade reinforced, super tough polyamide And as always our products are MADE IN THE USA with a LIFETIME WARRANTY.

SCPM556  Features and Functions:
• MADE IN THE USA
• MFT stipple texture
• Low profile ribs front texture
• Flared floor plate
• Paint Pen dot matrix on floor plate
• Drain holes
• Tool-less disassembly with double floor plate safety release tabs
• Quick ammo dump
• Long-life stainless steel spring
• Four-way anti-tilt follower
• Oversized mag catch

Not quite yet... How about higher capacities for larger items? - Door Gunner