Breech Seal For Beeman, Diana, Cometa and Gamo Air Rifles

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Breech Seal for Cometa, Beeman, Diana and select models of GAMO Air Rifles.Please see list below for compatability.

Usage / Fitting

Breech Seals are designed to capture and direct gas from the action of Air Rifles and direct it along the barrel, firing the pellet. If your existing factory fitted / aftermarket breech seal is worn or split then gas escapes elsewhere, reducing the power and velocity of your rifle.

Installation is simple, on most models of Rifle the existing seal can be easily removed with a pin or screwdriver and the replacement will push-fit in place.


This breech seal is compatible with the following models of Air Rifle.

  • Beeman: MOD 700, 800, 850 and 900
  • Cometa: 50, 100, 200, 220, 300, 400 and Fusion 400
  • Diana: LP8 Magnum, 10, 5G, 60, 65, 66, 6G, 6 and 5
  • Gamo: Fusion 400
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