TechT BT TM7/TM15 MRT Upgrade Bolt Rolling Gear Bags 000 psi remote coil hose

000 psi remote coil hose kit attaches easily to both the tank and your marker

This kit includes both front and back vernier wheels with magnets for the A4

but no object is in the breech - just hold down the trigger for 1 second

Picatinny universal mounting rails

30 Second Breakout Drill

TechT BT TM7/TM15 MRT Upgrade Bolt Rolling Gear Bags 000 psi remote coil hoseLike all of TechT's bolts, the TM7 and TM15 MRT bolts have been through rigorous R&D and field testing. This testing guided the bolt to what is now the MRT. Initial prototypes saw the removal of the "cup seal" on the front of the stock bolt. After testing various other o rings and seals, TechT decided that the MRT needed this cup seal on the front of the bolt for the best performance. The removal of this cup seal, like on other competitors' bolts,