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Paintball Gun Bolt Upgrades | Invert Mini & Empire AXE MRT Bolt Systems

The TechT MRT Bolt (MASS REDUCTION TECHNOLOGY) for the Invert Mini and Empire AXE has been engineered with efficiency and consistency as the most crucial design elements. Our MRT system minimizes excess weight by removing portions of the bolt which are not utilized. Our spiral cut pattern allows us to lengthen the channels of material to be removed, resulting in lower weights and a really cool look!

Like all of our bolts, the Mini & AXE MRT bolts have been through rigorous R&D and field testing. This testing guided our Mini & AXE 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, we 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, actually yielded worse efficiency and a loss of up to 15 fps compared to a bolt with the proper cup seal. This important recognition sets the MRT Mini and AXE bolts apart from their competition; no other aftermarket Mini or AXE bolt maintains this important seal. The lightweight and clever design make it the most efficient and fastest bolt available for the Mini and AXE.


The MRT bolts produce less kick, lower pressure, peak efficiency, and great consistency. The MRT's deep cuts allow for greater weight reduction in both the GOLD and Delrin versions.

The MRT GOLD is 30% lighter than stock, and the MRT  Delrin is about 60% lighter than stock.

We made two different bolts because we realize that some people would like a metal bolt, while others prefer delrin. Both tested very similar, so you really can't go wrong. The metal bolt weighs about 3 grams more than the delrin, however both show excellent improvements over the stock. The MRT Gold is hard anodized and teflon coated for minimal drag and friction.


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TechT Aluminium MRT Bolt Upgrade for Invert Mini, Mini GS and Empire Axe, Axe Pro
Item: IN001  In Stock
Manufacturer: Other
Lightened All Aluminium bolt for the Invert Mini, Mini GS and Empire Axe and Axe Pro!
TechT Delrin MRT Bolt Upgrade for Invert Mini, Mini GS and Empire Axe, Axe Pro
Item: IN002  In Stock
Manufacturer: TechT
Lightened All Delrin Bolt Upgrade for the Invert Mini, Mini GS, and Empire Axe and Axe Pro!
MRT, Mini, AXE, and KUSH Bolt Tip Oring
Item: IN001a  In Stock
Manufacturer: TechT
Replacement Soft Tip Bolt Tip O-Ring for all TechT MINI, AXE, and KUSH bolts
Bolt Tip Oring Kit - 5 Pack
Item: BoltTipOringKit  In Stock
Manufacturer: TechT
Fits on the Tip of MRT Bolts, Mini Bolts, Axe Bolts, and Kush Bolts. 5 Pack
11mm X 1.5mm NON-70
Item: M1.5x11BN70  In Stock
Manufacturer: TechT
Inner bolt guide o-ring for the Invert Mini and Axe
Item: MRT004  In Stock
Manufacturer: Other
Take it to the NEXT LEVEL with a LOW PRESSURE SPRING Kit! Fits Invert Mini, Mini GS, Axe, Axe Pro and TiPX!
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