OMER, EXCALIBUR CARBON All Spearguns >>> Spearguns by OMER More details and ordering info. With a barrel made of carbon, this gun is rigid enough to make it extremely precise even when using the longer models up to 130mm. Exceptionally light and strong. Designed for 16 mm. rubber. User input on EXCALIBUR CARBON by OMER: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines