The Pentagon Magazine Coupler Kit provides a unique external coupling option for the 10 Rounds Ultimag AR magazines and is provided with five Ultimag 10R magazines.

Advantages:

• Highly ergonomic design
• Durable high grade polymer construction
• Maintains 10 cartridges limitation
• Available in 5 round limited magazines version
  
• External coupler - does not replace magazine floor plate
• Available in black, olive drab green or flat dark earth

Compatibility:

• M16/M4/AR15 variants

Included in the kit:

• 1x PMC Magazine Coupler
• 5x Ultimag 10R Magazines