CMMG AR-15 Upper Parts Kit — Upper Pins & Springs

This CMMG AR-15 upper parts kit supplies the upper receiver pins and springs needed for routine maintenance, assembly, or armorer work on AR-15 platform rifles. Components are produced to meet or exceed Mil‑Spec standards and are finished for standard AR-15 fit and function. The kit is intended as an accessory for AR-15 / M16 / M4 style upper assemblies and is made from steel per manufacturer information. Use for replacement or build projects where Mil‑Spec upper pins and associated springs are required.

Key Specifications

• The kit is classified as a Parts Kit for AR-15 upper assemblies.
• The included components are described as UPPER PINS/SPRINGS.
• The material is specified as STEEL.
• The product size/finish is listed as AR-15.
• The kit dimensions are 0.65 X 3.10 X 4.55.
• The recorded height is 0.6500.
• The recorded width is 3.1000.
• The recorded length is 4.5500.
• The item is noted as compatible with AR-15/M16/M4 Standard Handguard platforms per product attributes.
• The listing identifies this as an AR-15 accessory (Yes).

This compact upper parts kit gives armorers and owners a straightforward source of Mil‑Spec upper pins and springs for upkeep and builds. Durable steel components and standard AR-15 fitment help simplify installation and replacement, making the kit a practical choice for maintenance benches and build tables alike.