4-Way upgrade for M16...

ar15dave · Aug 25, 2017

I have an M16 (yep it is a blast to shoot). I am thinking of adding a 4-Way fire control setup to it so I can shoot in burst mode.

Is that legal to do with an M-16? Add the burst mode to it?

Thanks,

Dave

Gcs7th · Aug 25, 2017

1st I don't own a machine gun but as I understand the law if your firearm is a registered MG I don't think the ATF cares whether you should 1,2,3 or 20 rounds per pull of the trigger because that all falls under what a full auto machine gun is. My only concern would be if you own other ARs and you have extra FA parts they might try to say constructive intent to build other MGs. Another member here mentioned he keeps his short barreled uppers for his MG separate from his other ARs so it's clear he only intends to use them on his MG.

Rockzilla · Aug 25, 2017

NFA item and reg'd as such, as mentioned 3 shot burst, dump the mag in one trigger pull, or 4 way etc.

-Rock

BradMacc82 · Aug 25, 2017

I always thought with the select-fire AR FCG's, it was either/or - Burst or Full?

ar15dave · Aug 25, 2017

They make a 4-Way system that allows for safe/semi/full/burst. Not sure the cost but, considering getting one for my M16. Will see if I need to mod the receiver for it. Not sure if I have the safety stops on mine or not.

As for criminal intent, you would have to have the extra sear hole in the AR lower for the Full Auto fire group to work in full auto mode, as far as I know. I keep spares for most of my guns including my M16. I try to keep Class III stuff separate from the rest but, figured the BATFE would be hard pressed to prove criminal intent if I already own an M16. The spare parts are just that...spare, for each particular gun.

Dave

Rockzilla · Aug 25, 2017

Some reading here:

https://www.ar15.com/forums/armory/M16-4-Way-Selector-Install/23-364516/

or

https://robrobinette.com/M16_4-Way_Selector.htm

the parts range from $180 and up.... if and if you can find them anymore.
few and far between. another item that people are holding on to or to
make $$$

and if memory serves me correctly you must mill off a selector stop if present
(not sure but) would not do that to my "item"

-Rock

BradMacc82 · Aug 25, 2017

Learned something new. Thanks.

I'd imagine, seeing that you already have a RR M16, doing the 4-way conversion shouldn't pose any legal issues. Seems like the big issues are going to be sourcing the parts, and deciding on to have the stops milled down (if you have them, or if you can't find the DPMS raised lever to clear them).

rsideout · Aug 25, 2017

ar15dave said:
I have an M16 (yep it is a blast to shoot). I am thinking of adding a 4-Way fire control setup to it so I can shoot in burst mode.

Is that legal to do with an M-16? Add the burst mode to it?

Thanks,

Dave

Just swap the parts out. No legal problems. Just like if you wanted to run a LMG upper that fires from the open bolt and requires that parts set. I keep a spare set of M16 fire control parts for mine in case something breaks. And that kit has come in handy. Also keep spare fire control parts for the Macs, FNC, Uzi, AM180, etc. Things break when running 1,000 RPM.....be prepared.

ar15dave · Aug 25, 2017

Well now all I gotta do is find a four way kit. The DPMS looks cool and is designed to clear the safety stop nubs. My M16 lower has one of those missing already so I should be good with any of the kits.

And the hunt is on.

Dave

IMBLITZVT · Aug 28, 2017

I think I read somewhere how the burst package is one of the first things new M16 owners get and the first thing M16 owner get rid of....

I think the M16 4 way trigger is not as good as others... if I recall correctly. Something like it does not reset after you fire. So you fire 3 shots, then a burst of 1 shot. Or if you shoot 2 shots, then the second burst will be 2 shots. In other words it does not reset between trigger pulls.

I don't remember exactly but I looked into this enough that I decided against getting it. I know of one guy in the club that has it. The rest have had it and removed it. In all seriousness, your finger is the burst control.

Not trying to be negative but just a reminder why you don't see them all the time.

ar15dave · Aug 29, 2017

IMBLITZVT said:
I think I read somewhere how the burst package is one of the first things new M16 owners get and the first thing M16 owner get rid of....

I think the M16 4 way trigger is not as good as others... if I recall correctly. Something like it does not reset after you fire. So you fire 3 shots, then a burst of 1 shot. Or if you shoot 2 shots, then the second burst will be 2 shots. In other words it does not reset between trigger pulls.

I don't remember exactly but I looked into this enough that I decided against getting it. I know of one guy in the club that has it. The rest have had it and removed it. In all seriousness, your finger is the burst control.

Not trying to be negative but just a reminder why you don't see them all the time.

Thanks for the info. Appreciate the background. Do you remember who in the club has one? Just want to chat. This is more of one of those "if I come across one for a decent price get it" kind of things.

Thanks again!

Dave

rsideout · Aug 29, 2017

ar15dave said:
Thanks for the info. Appreciate the background. Do you remember who in the club has one? Just want to chat. This is more of one of those "if I come across one for a decent price get it" kind of things.

Thanks again!

Dave

Albert has his set up in 4 position. I'll send you his email address.

IMBLITZVT · Sep 1, 2017

rsideout said:
Albert has his set up in 4 position. I'll send you his email address.

Yes he is the only person I think still has it installed but several others have had one.

I saw this when I was doing my research on it:

ar15dave · Sep 5, 2017

IMBLITZVT said:
Yes he is the only person I think still has it installed but several others have had one.

I saw this when I was doing my research on it:

Yeah I saw that the other day. Made me wonder if I should move forward with it. Read some other articles about issues with a 4-way system. Still need to email Albert and see what he says.

Dave

smdub · Sep 5, 2017

Consider the HK burst pack works better (resets count every time you stop) yet it still never gets used at the range by anyone I know. More of a novelty than anything else. If I came across one cheap, I'd still buy it. Murica!

4-Way upgrade for M16...

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