Knight’s Armament Company

[scalpel_ninja]

I bought two of these lights and will be forwarding one to @fulee9999

Thanks to his recommendation, I was introduced to this variant of an Elzetta light with a Malkoff module.

I'm by no means an expert at any of this. There isn't much info on this light online. I figured since I will be writing up my findings for @fulee9999 , I would make it public information to share with everyone.

The light comes in a basic cardboard box with a black sleeve bearing KAC's logo and slogan. Inside it's nicely packaged in foam with two CR123s included.

Comparison with other P60 lights reveals it's pretty similar, just slight variations in dimensions and essentially a variant of the Elzetta Bravo series.

Tailcap still bears the Elzetta logo on the button and is the click type. I'd imagine it'll also take the other tail caps made by Elzetta.

Finish is decent with some imperfections of the anodization in the threaded areas. It came completely without lubricant (please excuse my messy application).

The head is interesting as it doesn't have a glass window; rather, it's just an opening with an O-ring that seals against the TIR of the module. That O-ring is not fully seated in the recess, comes out loose, and easily lost (ask me how I know). On the bright side, it appears to be a very common size and I could lightly cement it to the inside of the head.

Module looks likely to be Malkoff, though I don't know what variant.

 

[scalpel_ninja]

Interior of the battery tube.

Interestingly, the drop in is glued to the body.

Beam is very tight and cool white. (I stink at beamshots)

Miscellaneous photos.

Interior of tail cap.

Surefire does not thread fully to the body.

Might be able to fit a Thryrm LPC clip if the clip is sanded and reamed because the gap is slightly too small and the cap is too thick.

This is just as heavy duty (if not more than) Surefire 6Ps and Malkoff MD2s. I really like the machining that makes the whole light super grippy.

As for the light module, I might try to find a way to loosen the epoxy to make it into a host that can use other drop ins. Perhaps a few drops of acetone? Alcohol? Heat?

 

[AstroTurf]

great post!!!

Thanks

 

[fulee9999]

awesome, thanks!

from what I gathered so far is that the light body was mostly machined by Elzetta, the drop-in is actually made by Gene Malkoff ( this fact Elzetta actually confirmed )

it was a limited run back in 2012 if I'm correct, there were two variations, this one ( black ) and a destert tan version

two things most people in the AR15 had a gripe with were:
- absolutely no grease
( this seems like still the fact )
- the rubber o-ring in the head was usually missing, but still people could get decent water seal without it

I'm pretty unsure at the moment what grease would work best, the Haynes that Gene uses, the No-ox conductive that Vinh uses, or the Nyogel that corporate manufacturers use.

Ps: I just remembered some of my surefires came bone dry as well, interesting choice

 

[fulee9999]

As for the light module, I might try to find a way to loosen the epoxy to make it into a host that can use other drop ins. Perhaps a few drops of acetone? Alcohol? Heat?

some people suggested that a rubber pickle jar opener could solve this issue, from what I can see here it doesn't look like there's a lot of adhesive in there ( actually I cannot see any ) so maybe there is only a few drops of loctite on the underside of the lip of the drop-in?

 

[thermal guy]

It might be a thermal compound to help with thermal conductivity between the dropin and the body. Elzetta used some form of grease like that at one time b

 

[Olumin]

It looks like a dog toy.

 

[fulee9999]

It looks like a dog toy.

or a supressor, but to each their own

 

[scalpel_ninja]

some people suggested that a rubber pickle jar opener could solve this issue, from what I can see here it doesn't look like there's a lot of adhesive in there ( actually I cannot see any ) so maybe there is only a few drops of loctite on the underside of the lip of the drop-in?

On second look, you're right, the silver area on the rim is just bare aluminum and not glue. I wonder if it's just friction fit? I'm likely going to get an LPC clip sanded to fit and carry it as-is. Maybe try to mess with the module at a later date.

 

[AstroTurf]

a wooden dowel rod to knock out the m60 from the back side...

also, i just love the flat black anno on this light. much better than the surefire or malkoff pictured.

 

[fulee9999]

I'm likely going to get an LPC clip sanded

the LPC doesn't fit as-is? :-o I thought the Elzetta Bravo, SureFire 6P(X)/G2, Malkoff MD2-3-4 shared the same tail diameter

or at least so far all my 6p-type clips fits all of them

 

[scalpel_ninja]

the LPC doesn't fit as-is? :-o I thought the Elzetta Bravo, SureFire 6P(X)/G2, Malkoff MD2-3-4 shared the same tail diameter

or at least so far all my 6p-type clips fits all of them

It's slightly too tight, like how my G2Z cap doesn't fit because of how the part is shaped and contoured. Since the KAC tail has facets and is not circular, I believe this adds the extra diameter.

Also, the KAC can be locked out by a mere 5-10 degree twist counter clockwise, so the extra thickness of the LPC lip would break contact with negative.

 

[fulee9999]

ah OK, so it's the thickness not the diameter, gotcha!

also this bodes well in a sense, because my Malkoff and Oveready clips are way too loose on the stock Elzetta body, which allows the clip to rotate, which is mighty annoying ( not to mention stripping the ano from the light body every time it moves )

 

[thermal guy]

It's cool for sure but you drop that in the mud you'll be cleaning for a week 😁

 

[scalpel_ninja]

It's cool for sure but you drop that in the mud you'll be cleaning for a week 😁

I'll just not clean it and let the mud and grime build up. Sooner or later all the little holes will be flush with the rest of the body.

"It's not a flaw. It's a feature!"

 

[scalpel_ninja]

ah OK, so it's the thickness not the diameter, gotcha!

also this bodes well in a sense, because my Malkoff and Oveready clips are way too loose on the stock Elzetta body, which allows the clip to rotate, which is mighty annoying ( not to mention stripping the ano from the light body every time it moves )

Actually it's both the diameter and tailcap gaps that make the LPC unable to work without modification.

Surefire 6P diameter

KAC Elzetta diameter

Necessary tailcap gap

LPC lip thickness

This would mean the LPC needs to be sanded on the inside and the lip needs to be thinned.

I agree, I hate spinning clips. That's why I 3D print (a while ago) some spacers to take up the slack.

 

[scalpel_ninja]

Got the LPC sanded to fit.

 

[ledbetter]

However practical, it looks like you put a Pep Boys wing on a Ferrari…just saying. Maybe a Prometheus or Oveready clip might be a better choice for this expensive light.

 

[scalpel_ninja]

However practical, it looks like you put a Pep Boys wing on a Ferrari…just saying. Maybe a Prometheus or Oveready clip might be a better choice for this expensive light.

LOL, now that you said it, I can't un-see it. The grey contrasting against the black might be making it worse.

I have a few Prometheus clips and the problem with those and Oveready clips is they allow the tail to stick out too far for me. Tightening them down with the right O-ring and/or shim so they don't spin can also be quite a task in itself. My 3D printer isn't in service right now, so printing new shims is not a quick solution. Once I do get the printer online again, I might modify the LPC design and (hopefully) print a sleeker design out of ABS.

 

[ledbetter]

Yeah, I agree, spinning clips are annoying but I don't mind the tail sticking out-something to grab. Malkoff tailcaps cinch down tight and maybe the longer Oveready tailcaps do too, I've never tried. It'd be interesting to see what you come up with on the 3D printer because the KAC is a very cool and unique design. I'm guessing the led is a Cree xre variant like the old M60's? At least that what it looks like. Strange mix of old and new with a lot of cool machining.I think I would just leave it alone and have it stick out of my back pocket or throw it in a glove box. If it was bored for 18650 I might be tempted.