Flatline Ops True Bore gun level, scope level, barrel level, bore level

Make Angle Indicator Installation a Snap.

Attaching Angle Degree Indicators or Cosine Degree Indicators to your firearm is easy, but calibrating them to read correctly is more challenging.

Attach the Flatline Ops TRUE BORE ADI/ACI Set-Up Tool™ to the tip of your barrel for quick and easy calibrating of your Indicators. Leveling the barrel becomes as easy as centering the bubble between the lines. Fits all barrels, any size.

Speed and ease is what you get with this ultra-lightweight, space-age polymer level.

  • Black, high-strength polymer construction
  • Instructions included

* Return Policy

Flatline Ops warrants all products for 1 year from the date of purchase against manufacturing defects. Proof of purchase is required (sales receipt) when making a warranty claim or return request.

Flatline Ops at its discretion, will repair or replace any part or parts of the product determined to be defective and will do so at Flatline Ops’ expense. Contact Flatline Ops with warranty questions or claims.