CMMG Inc Parts Kit AR-15 Lower Pins and Springs. Everything included in this AR15 Lower Parts set by CMMG either meets or exceeds Mil-Spec quality. We know how easy it is to lose a spring. With this CMMG Inc 55AFF75 AR15 Parts Kit you can easily replace springs and pins that are tiny and may fly away at any second. Skip the frustration of losing a tiny part and have this CMMG Inc AR15 Lower Pins and Springs Spare Parts Kit on standby. Specifications for CMMG Inc AR15 Lower Pins and Springs Parts Kit: Manufacturer: CMMG Color: Black Gun Model: M16 M4 AR-15 Condition: New Features of CMMG Inc AR15 Lower Pins and Springs Parts Kit: All Parts Meet or Exceed Mil-Spec Package Contents: CMMG Inc AR15 Lower Pins and Springs Parts Kit 2CM-FPK-CMMG55AFF75 CMMG Inc Lower Spring And Pin Kit - 55AFF75