JDT Steel M4 Bolt Carrier Group (WA Type)

[94705backyardairsoft]

your ROf just took a shit dive. have you tried CO2?

[Dusan12]

thx, good work

[MegaAbfuck]

what's the name of the aimpoint MOUNT :D

think it looks great xD

[superhornet59]

I could be wrong, but doesn't a heavier BCG increase FPS? Because it has more inertia it moves back slower, allowing peak gas pressure to rise higher than normal as the inner volume of the BCG increases slower, and higher pressure obviously means higher fps. Gas consumption is increased because the magazine valve is open longer (as the BC is accelerating slower now).

[41ACE]

is this positive pressure or NPAS?

[flynn921]

Hi, would this bolt carrier set work on the original WA rifles? Thanks!

[x56xmax]

Hello, and I would love to buy just the LOADING NOZZLE of this jdt steel bolt carrier! Also I have the exact same vltor 5ku bolt carrier and I was wondering if you could see if it fits into the 5ku and put it into your agm m4a1 and if it all works out and fits I would be more than happy to purchase it from you. SO please get back to me on this and comment on what you can do. I live in so cal by the way.

[xlL0NGxSh0TzZ]

ima get this 1. but can i use the regular agm bolt but with that nozzel? or no?

[ZaeViola]

"Not China"? Was it necessary putting it that way? Btw, the days of taiwanese / japanese airsoft are counted. It just aint worth paying all that money for toy gun parts when the real ones cost LESS; over 100 bucks for a toy bolt carrier, give me an effing break, you can get 'em real ones for half the price. We're americans, we can have all the ar15s money can buy, plus we're your largest consumer base, and we dont care if they came from Taiwan, Japanese or the chinks, they're all clones to us.

[xxthehuskycaboosexx]

im just wandering are you a racist or something, chinks, come on, and "were american, we can get all the ar 15 in the world", really? your just a standard dumb american, airsoft is a sport, but you wouldent understand that, and, im preatty sure u now this, but kids cant buy real ar's and shoot them at each other, morons like u piss me the fuck off

[SNK038]

If it is so good, why are you selling it? :) I just bought an AGM and am debating a BCG upgrade since I've heard of AGM bolts cracking.

[jonathandasilva2]

most guns and upgrades made in taiwan are verry good quality and durable!

[jonathandasilva2]

@jonathandasilva2 omg rong vid agian ffs why does that always happen rofl sorry!! was menna post this on a airsoft vid about G&G

[kakashi239]

wow hey i just bought this from you xD

[joeyphoshowey]

So do you think that getting an enhanced (stiffer) buffer spring would help improve ROF with top gas? Or would that inhibit the BCG from even cycling back all the way?

I'm sure with the CO2 in combination with stiffer spring, the ROF and recoil would be pretty awesome considering the heavy bolt.

The steel construction is a big bonus, but having to use CO2 or Red gas is more of a minus to me, since it will increase stress on the internals.

[LuisG2185]

A stiffer spring will just make the BCG use more gas to move. It will be come more inefficient.

CO2 would make this BCG a great addition! It would kick and cycle so nicely but there are no CO2 mags......

This BCG is indestructible though.

I had mine lightened by a professional CNC machinist. It's cycling better, I can now get 30 reliable and hard-kicking shots.

It's for SALE too by the way.

Please let me know if you're interested.

Thanks,

-Luis

[Mcleopard22]

@LuisG2185 What about the madbull co2 adapter? Any good?

[S34Ninc]

@LuisG2185 there are co2 mags 2 years later (now). GHK c02 mags to be specific.

[Snake8q34]

What if you used a dremel to shave off metal from the bolt to take off some weight? If you shave off enough of the bolt so that it matches the shape of the AGM bolt, then it might be more efficient. Only variable is whether or not it will compromise the bolt carrier's strength.

[TheR3CK]

That is a slow rate of fire, but you get good recoil and you save up ammo. But then again, gas efficiency is really bad. Have you tried using Red Gas?

[LuisG2185]

Yup, that's most of it summed up.

I just bought a CO2 gas charger so hopefully the results are promising.

-Luis

[ohnoesftw1]

@LuisG2185 Hey I havent seen any vids yet of this one with a co2 charger. How would this be set up?

Cheers

[xXKurisuSanXx]

Did you ever CNC the bolt like you said you were going to?

[LuisG2185]

The bolt carrier is currently at the shop getting lightened. I'll post an update as soon as I receive it.

I also got myself a CO2 adapter so the results with this heavy BCG should be fun!

Stay tuned.

Thanks guys.

-Luis

[xXKurisuSanXx]

@LuisG2185 any update on that? Also, how high of an fps can you get this puppy to with its NPAS system?

[Johnydepp86]

The JDT nozzle is compatible wit the AGM bolt carrier? Because if it's compatibe, i can make a light bolt system with alu nozzle

[LuisG2185]

No, the JDT nozzle is NOT compatible with the AGM bolt carrier.

The JDT nozzle only works with stock carrier and/or the Inokatsu 2009 bolt carrier.

Thanks,

-Luis

[LuisG2185]

L3utthead: Like alkagnol said, the JDT carrier is 2009 Inokatsu design. It does NOT accept your AS loading nozzle or any other WA western nozzle. It only fits the stock or the Inokatsu 09 nozzle.

Also the weight is not so much because of the nozzle. It's due to the heavy bolt carrier.

I am using propane, which is equivalent to green gas. You can shoot off a full mag with effective shots if you fire on semi. Don't expect to get a full mag using full auto with the JDT carrier.

-Luis

[l3utthead]

Also, wat gas are u using? Red or Green? Can i at least shoot a full mag without recharging the gas?

[l3utthead]

I have an AGM m4 stock BCG w/ A.S. Nozzle. If i get this and replace the JDT nozzle w/ the A.S. , how much improvement in the ROF u think will i get?

[alkagnol]

JDT BCG is inokatsu design, therefore the JDT BC not accept a WA M4 based nozzle.

[goldeneye007662]

How has it affected your ROF?

Probably slows it down? And is your bolt catch stock? This must destroy a stock one.

[LuisG2185]

The ROF has gone down drastically. It was great on the stock BCG but it's terribly sluggish and slow with the JDT BCG.

I have a steel Inokatsu bolt catch installed. And yes, it'll destroy a stock catch REAL fast.

-Luis

[LuisG2185]

No problem Jimitare. Contact me if you need anything else.

Rollin:

The loading nozzle/bolt face on the 5KU BCG shown on PX-Airsoft is plastic. It's a plastic Element nozzle to be exact.

-Luis

[rollindasixfo]

Question:

Is the bolt face on that 5KU BCG from PX-airsoft aluminum or plastic?

[jimitare]

Oh I also saw your comment on the 5KU aluminum bolt carrier. I'm actually planning on getting that. Can you tell me if this list of basic parts is good?

5KU Aluminum BCG (off of PX-airsoft with the bolt face)

Steel Bolt Catch

JDT Hopup chamber with rubber

The brass-looking adjustable recoil buffer off of EB

I'm probably gonna get this sometime during Xmas (or sooner). I hope you do a review on the aluminum bolt; that's the one I was worried about.

[LuisG2185]

Those parts are pretty good. I actually have one of those golden adjustable recoil buffers on the way as well.

One thing though. If you choose to activate your bolt catch, then the steel bolt catch will eventually wear out the aluminum carrier to the point that it will not lock back anymore.

It's a simple concept. Aluminum is softer than steel.

The aluminum carrier is meant for fast rate of fire setups. Turn off the bolt catch function to avoid your carrier from getting chewed up.

[jimitare]

So if I want to have the bolt catch option with reliability, I'll have to get a steel bolt to go along with it?

[LuisG2185]

Correct. If you have steel on steel, both parts will wear evenly.

However if you run an aluminum, you'll get awesome ROF and improved gas efficiency. A lighter carrier needs less gas to move back so you'll get more shots per magazine fill.

Each type of carrier has it's advantages and disadvantages. It's up to the user to get what fits his needs.

-Luis

[jimitare]

Thanks for the info, Luis. I'll keep that in mind :)

[LuisG2185]

Hey,

Welcom to the GBBR community. There's alot to learn!

The BCG has a negative pressure system but, unfortunately, it's NOT adjustable. It's a FIXED neg. pressure system(NPS). The only adjustable system on the market is RA-Tech's Negative Pressure Adjustable System(NPAS).

-Luis

[jimitare]

Hi Luis. I saw your comment on EB... gratz on finally getting it :)

I have a question... Does the fact that there's a negative pressure system mean I could adjust the gas flow on my gun? I couldn't tell with the video because like many AGM users, I'm still a noob to the GBBR community.

Thanks, and good luck :)

[12106993]

2490 isnt hong kong dollars, its new taiwan dollars

[LuisG2185]

No word on FPS yet. No chrono.

I'd definitely recommend removing material to make it lighter, The ROF on auto is about 10 RPS.

This would be great for CO2 use. It's very heavy so CO2 might be able to cycle it better....

-Luis

[killer4uman]

also on this bolt carrier lookvery beefy and can handle a good beating. maby ill get one and try to use co2 also.

[LuisG2185]

The loading nozzle is proprietary to the Bolt Carrier included.

This BCG is a 2009 Inokatsu design. It is NOT compatible with standartd WA design parts.

Currently, there are no 2009 Inokatsu BCG compatible aftermarket parts.

We'll just have to wait....

Thanks,

-Luis

[killer4uman]

lol i posted that comment after i saw that and i am gonna get this bolt. lol ima digatly copy it and cnc it to be lighter at my dads steel shop. ne ways goot build design. looks promising. also can u change the fps and how well does it cycle like rps ~ 14 tell me a estimate and how the fps change is

[killer4uman]

just put it in the origional agm bolt carrier or another carrier

[SonicSigs]

You don't need to sand anything, all you need to do is clean the inside of the bolt and the nozzle o-ring, then use some silicone oil and really lube that baby up. What i did and it works great!!! but it's sluggish and kinda sucks

[zreau]

ROF is slow indeed. Too bad, because it looks good.