Ergo Grips AR-15/M16 M4 Receiver Castle Nut Price Guide
This page brings together current GunSpot inventory and historical marketplace data for the Ergo Grips AR-15/M16 M4 Receiver Castle Nut. Prices vary by condition, configuration, provenance, and included accessories.
Active listings0
Active auctions0
Historical sample1
Average asking price$14
Observed range$14–$14
How to read this price guide
These figures summarize historical GunSpot asking prices, not guaranteed completed-sale values or formal appraisals. Compare condition and configuration before estimating market value.