Umbrella Maxxpro Hop-Up & 6.03mm R-Hop Inner Barrel Combo

~3-4 Week Build Time Perfected and heavenly matched. Be aware, shots will be erratic/inaccurate for the first 5,000 rounds put through, it takes a little time for the patch to break in and conform to the shape of a BB. Once you play a couple of games you should be shooting extremely accurate!  The best Hop-Up Drop-In kit airsoft can offer, make sure that Maxx Hop-Up's fit into your build well as some platforms actually aren't those most compatible with Maxx even with a TM Spec M4.  Our handmade R-Hop has been an integral modification we perform for all our builds as users can experience 30% increased effective range over non R-Hopped barrels. Purchase in a complete drop in assembly configuration for a true plug and play upgrade process if your build uses a Tokyo Marui spec M4 style hop up unit. Please note that there is a little slit in the patch near the end of the barrel, that slit is intended to help vent air pressure on high RPS builds to keep everything more consistent. This does