OMER, EXCALIBUR All Spearguns >>> Spearguns by OMER More details and ordering info. The new Excalibur line raises the bar in competitive quality guns. The barrel is round and cross-sectioned, made of aluminum. Designed for 16 mm. rubber with housing for second rubber. Adjustable shaft guide. The grip is coated with thermoplastic rubber, and features a dual line release mechanism. Reel attachment is quick and easy. User input on EXCALIBUR by OMER: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines