Bukkit

I've been trying to attach a riot shield to a gun. I'm trying to do this by making the riot shield an attachment, and then making a gun with the attachment on it. Is this even possible? Is there a better way to do it? 

Heres the necessary code:

The attachment: 

RIOT:
Item_Information:
Attachments:
Type: accessory
Toggle_Delay: 5
Sounds_Toggle: NOTE_STICKS-1-2-0
Riot_Shield:
Enable: true
Do_Not_Block_Projectiles: false
Do_Not_Block_Melee_Attacks: true
Durability_Based_On_Damage: false
Durability_Loss_Per_Hit: 0
Forcefield_Mode: false
Only_Works_While_Blocking: true
Sounds_Blocked: BLOCK_ANVIL_LAND-3-1-0
Sounds_Break: BLOCK_ANVIL_LAND-1-1-0

The Gun:

M16RIOT:
Item_Information:
Item_Name: "&eM-16 - Assault Variant"
Item_Type: 31~2
Item_Lore: "&eFully automatic with high power.|&eControls are inverted."
Attachments:
Type: main
Info: "RIOT"
Toggle_Delay: 5
Sounds_Toggle: NOTE_STICKS-1-2-0
Sounds_Acquired: BAT_TAKEOFF-1-1-0
Shooting:
Right_Click_To_Shoot: true
Cancel_Left_Click_Block_Damage: true
Cancel_Right_Click_Interactions: true
Recoil_Amount: 1
Projectile_Amount: 1
Projectile_Type: snowball
Projectile_Speed: 50
Projectile_Damage: 3
Bullet_Spread: 2
Sounds_Shoot: IRONGOLEM_HIT-1-2-0,SKELETON_HURT-1-2-0,SKELETON_WALK-1-2-0
Sneak:
Enable: true
No_Recoil: true
Bullet_Spread: 1
Fully_Automatic:
Enable: true
Fire_Rate: 7
Reload:
Enable: true
Reload_Amount: 30
Reload_Duration: 50
Sounds_Out_Of_Ammo: ITEM_BREAK-1-1-0
Sounds_Reloading: FIRE_IGNITE-1-1-4,DOOR_OPEN-1-2-6,FIRE_IGNITE-1-1-36,HURT_FLESH-1-0-37,DOOR_CLOSE-1-2-38
Firearm_Action:
Type: slide
Close_Duration: 9
Close_Shoot_Delay: 12
Sound_Close: PISTON_RETRACT-1-2-0,PISTON_RETRACT-1-2-3
Scope:
Enable: true
Zoom_Amount: 3
Zoom_Bullet_Spread: 0
Sounds_Toggle_Zoom: ENDERDRAGON_WINGS-1-2-0
Abilities:
Reset_Hit_Cooldown: true
Hit_Events:
Enable: true
Sounds_Shooter: SHOOT_ARROW-1-2-0

The error in  console:

[CrackShot] Enabling CrackShot v0.98.7

[CrackShot] The weapon 'Enable' does not have a value for Item_Type.

[CrackShot] The weapon 'Enable' does not have a value for Item_Name.

[CrackShot] The weapon 'Do_Not_Block_Projectiles' does not have a value for Item_Type.

[CrackShot] The weapon 'Do_Not_Block_Projectiles' does not have a value for Item_Name.

[CrackShot] The weapon 'Do_Not_Block_Melee_Attacks' does not have a value for Item_Type.

[CrackShot] The weapon 'Do_Not_Block_Melee_Attacks' does not have a value for Item_Name.

[CrackShot] The weapon 'Durability_Based_On_Damage' does not have a value for Item_Type.

[CrackShot] The weapon 'Durability_Based_On_Damage' does not have a value for Item_Name.

[CrackShot] The weapon 'Durability_Loss_Per_Hit' does not have a value for Item_Type.

[CrackShot] The weapon 'Durability_Loss_Per_Hit' does not have a value for Item_Name.

[CrackShot] The weapon 'Forcefield_Mode' does not have a value for Item_Type.

[CrackShot] The weapon 'Forcefield_Mode' does not have a value for Item_Name.

[CrackShot] The weapon 'Only_Works_While_Blocking' does not have a value for Item_Type.

[CrackShot] The weapon 'Only_Works_While_Blocking' does not have a value for Item_Name.

[CrackShot] The weapon 'Sounds_Blocked' does not have a value for Item_Type.

[CrackShot] The weapon 'Sounds_Blocked' does not have a value for Item_Name.

[CrackShot] The weapon 'Sounds_Break' does not have a value for Item_Type.

[CrackShot] The weapon 'Sounds_Break' does not have a value for Item_Name.

[CrackShot] Gun-mode activated. Boop!

Anything helps. Thank you!