These are all attachments I could find from the Nerf series Modulus, I might not have found all of them, please contact me if I missed one. If an attachment is sold with a blaster, then the blaster's name will be included in brackets. These are not exactly in order of being released.

Nerf Blaster Stock

Nerf Modulus Barrel Extension

Nerf ECS Stock (ECS-10)

Nerf ECS Scope (ECS-10)

Nerf ECS Grip (ECS-10)

Nerf Blast Cam (Battlescout ICS-10)

Nerf Grip Blaster

Nerf Ionfire Muzzle (Ionfire)

Note: Also the M0dulus Stryfe Muzzle

Nerf Ionfire Dart Rail (Ionfire)

Nerf Recon Barrel (Recon MK-II)

Nerf Tri-Strike Missile Launcher (Tri-Strike)

This one is a stock attachment and a tactical rail attachment.

Nerf Tri-Strike Mega Launcher (Tri-Strike)

Nerf Barrel Strike

Nerf Regulator Stock (Regulator)

Note: Also the Tracker ECS-10 Stock

Nerf Regulator Barrel/Scope (Regulator)

Nerf Regulator Barrel Handle (Regulator)

Nerf Regulator Barrel/Scope (Regulator)

Nerf Stockshot

Nerf Stryfe Muzzle (Modulus Stryfe)

Note: Also the Ionfire Muzzle

Nerf Stryfe Grip (Modulus Stryfe)

Nerf Demolisher Stock (Modulus Demolisher)

Nerf Longstrike Barrel (Modulus Longstrike)

Nerf Longstrike Scope (Modulus Longstrike)

Note: Also the Tracker ECS-10 Scope

Nerf Longstrike Bipod (Modulus Longstrike)

Nerf Mediator Stock (Mediator)

This stock houses a blaster, similar to the ZS doublestrike.

Nerf Mediator Barrel (Mediator)

Nerf Tracker Stock (Tracker ECS-10)

Note: Reskin of the Regulator Stock

Nerf Tracker Surpressor (Tracker ECS-10)

Nerf Tracker Scope (Tracker ECS-10)

Note: Also the Longstrike Scope (reskin)

Nerf Recon Stock (Modulus Recon MK-II)

Note: Reskin of the Regulator Stock

Nerf Recon Muzzle (Modulus Recon MK-II)

Note: Also the Stealth Upgrade Kit Muzzle

Nerf Recon Shield (Modulus Recon MK-II)

Nerf Long Range Scope (Long Range Upgrade it)

Note: Also the Longstrike Scope (reskin)

Nerf Long Range Barrel (Long Range Upgrade it)

Nerf Long Range Bipod (Long Range Upgrade it)

Nerf Foldable Front Grip (Stealth Ops Ugrade Kit)

Nerf Red-Dot Sight (Stealth Ops Ugrade Kit)

Nerf Muzzle (Stealth Ops Ugrade Kit)

Note: Also the Modulus Recon MK-II Muzzle

Nerf Bayonet (Close Combat Upgrade Kit)

Nerf Stunner-holder Clips (Close Combat Upgrade Kit)

Nerf 3-in-1 Tactical Rail (Ultimate Customizer Pack)

Nerf Tactical Light (Ultimate Customizer Pack)

Nerf Adjustable Stock (Ultimate Customizer Pack)

Note: The Magazine-holder is a Tactical Rail attachment

Nerf Flip-Up Sight (Ultimate Customizer Pack)

Note: Also the Elite Longstrike Sight

Nerf Barrel (Ultimate Customizer Pack)

Nerf Missile Holder (Ultimate Customizer Pack)

Nerf Light

Nerf Night Vision Scope

Nerf Storage Shield

Nerf Storage Stock