Remington 870 with Magpul Stock and ERGO GRIP 3-Rail Shotgun Forend from zekejapan from Remington 870 Forum:

Remington 870 Express Left Hand
Remington 20″ Rifle Sight Barrel
Remington Magazine Extension Kit 3-Round
MAGPUL SGA Stock
MAGPUL SGA Recoil Pad Adapter
Remington Supercell Recoil Pad

Remington 870 with Magpul Stock and ERGO GRIP 3-Rail Shotgun Forend

Remington 870 with Magpul Stock and ERGO GRIP 3-Rail Shotgun Forend

MAGPUL SGA Sling Mount
MAGPUL SGA Cheek Riser Kits
MAGPUL Type 1 & Type 2 QD Sling Mount
SCATTERGUN TECHNOLOGY Jumbo Head Safety
BROWNELLS Shotgun Follower
SCATTERGUN TECHNOLOGY Side Saddle Shell Holder 6-Round

 MAGPUL SGA Sling Mount MAGPUL SGA Cheek Riser Kits MAGPUL Type 1 & Type 2 QD Sling Mount SCATTERGUN TECHNOLOGY Jumbo Head Safety BROWNELLS Shotgun Follower SCATTERGUN TECHNOLOGY Side Saddle Shell Holder 6-Round

MAGPUL SGA Sling Mount
MAGPUL SGA Cheek Riser Kits
MAGPUL Type 1 & Type 2 QD Sling Mount
SCATTERGUN TECHNOLOGY Jumbo Head Safety
BROWNELLS Shotgun Follower
SCATTERGUN TECHNOLOGY Side Saddle Shell Holder 6-Round

MAKO GROUP Tritium Rifle Sights
ERGO GRIP 3-Rail Shotgun Forend
MAGPUL AFG2
MAGPUL XTM Hand Stop Kit
MAGPUL XTM ENHANCED Rail Panels
MAGPUL Rail Ladder Panel
MAGPUL RSA QD Rail Sling Attachment

Remington 870 with Magpul Stock and ERGO GRIP 3-Rail Shotgun Forend

Remington 870 with Magpul Stock and ERGO GRIP 3-Rail Shotgun Forend