OMER, MASTER COMPETITION All Spearguns >>> Spearguns by OMER More details and ordering info. This speargun was designed in consultation with world champion Alberto March. Its main features are the flex-free carbon-kevlar barrel with lateral convex system and the Excalibur grip with butt for easy reloading. It can be used with 16 or 20 mm rubbers, 6.5 mm inox shaft and derlin articulated wishbones. The yellow grip helps visibility at depth. User input on MASTER COMPETITION by OMER: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines