Mossberg 500/590
ERGO MOSSBERG 500/590 & SHOCKWAVE 12/20 GAUGE SHOTGUN ADAPTER
Use the ERGO Adaptor to install an AR stock/brace & pistol grips on your Mossberg 500/590 shotguns. Accommodates mil spec or commercial buffer tubes. ALL NFA RULES APPLY
Compatible with both 590 Models & Shockwave.
Need replacement hardware? Click here for ERGO Mossberg Hardware Packs
For best installation, we suggest using the 3/16 Wrench