Shearforce-OAB "Oops! All Bearings!" Nerf rifling Attachment (BCAR)

The Shearforce-OAB is a variation on the Shearforce Rifling Platform. Instead of the PBCAR's variable mode rifling, the Shearforce-OAB makes the same inverse progressive twist rate with "Oops! All Bearings." With the same low-profile collet, this BCAR fits snugly on as little as 20mm of 16mm or similar OD exposed metal barrel.

This is an experimental release. I think it has promise, but I haven't had the time to test it as fully as I've wanted to. If you have any feedback -- especially more data to corroborate its effectiveness or ineffectiveness -- please let me know.

FEATURES:
• Shearforce-OAB BCAR
• 3D-printed rifling attachment
• Aggressive pre-rotation, plus
• Gentile correction
• Turbulence-limiting porting
• Compatible with most exposed 16mm barrels* 
• Secured with low-profile O-ring collet
• Different configurations for various FPS caps
• 3x3 version compatible with Worker Seagull

*Note: Barrel tip clearance is required for proper fit. 

FILES INCLUDED:
• Shearforce-OAB 1231-332

*Naming convention follows Degree, line, row - degree, line, row
So, 1231-332 is a 12-deg, 3x1 BCAR followed by a 3-deg, 3x2 BCAR

RECOMMENDED PRINT SETTINGS:
• Quality: No scarf seams or joints
• Strength: At least 3 wall loops, 20% Infill
• Others: Outer brim on BCAR body for better bed adhesion

HARDWARE NEEDED: 
Out of Darts' Hardware Kit includes Everything you need to print and assemble up to 3 BCARs yourself, including
• 18 3mm x 7mm x 3mm Flanged Bearings
• 18 M3 x 8mm Socket Head Screws
• 3 14mm OD Collet O-rings
• 3 DASH-016 O-rings

SPECS:
• Exit Angle: 3-Degree, Inverse-progressive
• Lines: 3
• Rows: 3
• Total Bearings: 9
• Minimum Barrel Clearance: 20mm
• Material: Hardware
• Dimensions: varies
     • Assembled: 32mm x 60mm

LINKS:
• Hardware Kit
• Install Guide
• Recommended Darts