Overview
The Microtech Ultratech EX-ZBP Bayonet Signature Series represents the apex of OTF automatic knife engineering. This Signature Series model combines the revolutionary Zero Blade Play (ZBP) technology with a distinctive stonewash-finish fully serrated bayonet blade in Bohler M390MK steel. The ZBP system virtually eliminates all blade movement when deployed, delivering a locked-open feel that rivals a fixed blade. The full serrations provide aggressive cutting power through tough materials, while the unique bayonet profile offers exceptional piercing capability.
Zero Blade Play (ZBP) Technology
The Ultratech EX-ZBP incorporates Microtech’s advanced Zero Blade Play system that virtually eliminates all blade movement when deployed, delivering a blade that feels as solid as a fixed blade. This engineering achievement sets the gold standard for OTF precision.
Signature Series Bayonet Blade
The distinctive bayonet blade profile offers a unique combination of piercing capability and slicing efficiency. The full serrated edge provides aggressive cutting power through fibrous materials, rope, webbing, and seatbelts.
M390MK Super Steel
Bohler M390MK is a proprietary variant of the legendary M390 steel, exclusively produced for Microtech. It delivers an exceptional balance of hardness (60-62 HRC), edge retention, toughness, and corrosion resistance.
Premium Components
- Bohler M390MK bayonet blade with stonewash finish
- 6061-T6 aircraft-grade aluminum handle
- Zero Blade Play (ZBP) deployment system
- Signature Series designation and markings
- Milled titanium pocket clip with ceramic balls
- Stainless steel glass breaker
- Torx hardware throughout
Specifications
| Type | Out-The-Front Automatic |
| Blade Length | 3.50″ |
| Overall Length | 8.50″ |
| Handle Length | 5.00″ |
| Blade Steel | Bohler M390MK |
| Handle Material | 6061-T6 Aluminum |
| Weight | 3.50 oz |
| Pocket Clip | Milled Titanium with Ceramic Detent |
| Hardware | Torx Screws |
| Glass Breaker | Stainless Steel |
| Country of Origin | USA |
| Handle Color | Black |
| Blade Finish | Stonewash |
| Blade Style | Bayonet |
| Edge Type | Full Serrated |
| Series | Signature Series |




