This hop rubber is manufactured from Silicon Rubber and is compatible is best coupled with a specific weight BB dependent on the degree of hardness you purchase. This helps achieve a good air seal and apply sufficient back spin where a softer rubber would struggle. The Maple Leaf Hot Shot Hop Up Rubber is a perfect upgrade for players looking to start using heavier BBs and want a cheap easy way to increase their accuracy at range. Please note that these rubbers are designed for the installation of Crazy Jet GBB barrels in an AEG.

Features:

• 50° - For 0.2g BBs and higher
• 60° - For 0.25g BBs and higher
• 70° - For 0.32g BBs and higher
• Made in Canada
• Designed for heavier weight BBs
• High performance bucking
• Engineered to boost range and FPS
• Maximises contact with BB across the patch
• Specially designed concave contact patch 
• Aligns BBs during firing
• Evenly grips around the BB for a better air seal
• Operates in temperatures from -50°c to 230°c
• Designed to withstand thousands of rounds