MIL-K-70606 Knife, Bayonet, Multipurpose, M9 with ScabbardThis specification covers the M9 Multipurpose Bayonet System MPBS. This system is comprised ofa multipurpose knife which functions as a bayonet, field craft knife, combat knife and wire cutter and is carried in a detachable scabbard which may also SClVC as part of the wire cutter. The term bayonet, hereinafter mentioned in this specification, shall be the multipurpose knife described above.

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MIL-K-70606 (AR)

MATERIAL NUMBER OF CUTS

a.	Barbed wire, double strand, 12 1/2 gage, 0.099 inch diameter. (ASTM-A121 and ASTM-A585)	50
b.	Standard metal band: Flat
	steel strapping 5/8 inch by
	0.020 inch thick, Class 1, Type
	I or IV of QQ-S-781 as specified
	in MIL-B-2427.

3.4.2 Corrosion resistance. The MPBS shall be corrosion resistant. Application of one or more of the surface treatments and finishes listed in Table V of MIL-STD-171 is acceptable.

3.4.3 R esiliency.

The bayonet shall not fracture and the

blade shall not have a permanent deformation of more than 3/16 inch when tested as specified in 4.6.3.

3.4.4 Impact. The bayonet shall withstand a minimum impact of 28 foot-pounds of energy without fracture, permanent deformation-or loosening of any parts:

3.4.5 Twist. The bayonet shall withstand a twist of 25 foot-pounds torque without fracture, permanent deformation, loosening of any parts or detaching from the test fixture.

3.4.6 Withdrawal. The bayonet shall be capable of withstanding a gradually applied longitudinal tensile load of 250 pounds without fracture, permanent deformation, loosening of any parts or detaching from the test fixture.

3.4.7 S harpness.

The bayonet shall be capable of severing a

nylon twine in accordance with Dwg. 7274020 in not more than five strokes.

3.4.8 Drop test. The bayonet with and without the scabbard shall withstand a drop test from a height of four feet onto a concrete surface.

3.4.9 Interchangeability. The bayonet and scabbard shall be interchangeable. All spare parts shall be interchangeable.

3.4.10 Latching mechanism functioning. The bayonet shall be capable of being assembled to an M16 series Rifle without manually depressing the latching lever; shall be securely retained after assembly, and shall be readily detached when the latching lever is manually depressed.