Quick question, Para…I have one of these rifles as well, purchased in California, in 94 or 95, it’s a tack driver. If I replace the standard bolt carrier with the LMT semi auto BC, do I need to headspace it?

In my opinion, you never have to headspace an AR.

quote:

Originally posted by parabellum:
In my opinion, you never have to headspace an AR.

this,

as long as you are confident in the parts you bought,

they were built to be able to swap parts as needed, including bolt and bolt carrriers, with out worry,


IIRC the Gov't ran a field guage thru the M16's once a year or before they were deployed anywhere,

of course that was what my Dad did for the Reserves and he retired in 97, so not sure if that is the case now,

Kyjondeere sent me a pic. Here's the LMT semi-auto carrier and the Colt ban-era carrier side by side. You can see how much of the firing pin shroud Colt removed. That's an obscenity.

Don't forget to lube the four carrier rails, the cam pin track and the bolt lugs, and keep lube off of the the firing pin and out of the firing pin hole in the carrier. This also include the hole in the cam pin, where the firing in passes through- not a single drop of lube, but of course you can rub a bit of lube on the outside of the cam pin.

I wound up with one of those carriers in a trade last year. I got rid of it as fast as I could.

OLD THREAD WARNING++++++


As I posted on the first page, I have a post ban Colt HBAR Match just like this one



I guess I never opened it up because I swore it had that stupid trigger block thing. Anyway, I grabbed it the other night to show it to a bud and it does not have the trigger block (yayy me) but it does have that shaved bolt carrier. It also has the weep hole for a proper breakdown pin, currently has the threaded one. I am not sure about the trigger pins being oversized or not


The link Para posted to that Lewis Machine bolt carrier is no good and they are not showing one available. I searched on some other sites and found BCM, Wilson combat and others but how do I know if it's a semi auto bolt? Only a few listed them as auto but no semi.

It is marked .223, so no 5.56?



I found a video of a guy that removed the trigger block

I have an HBar and should examine it.

quote:

Originally posted by Para:
I seem to recall that if the lower is drilled for the detent (and yours is), you can use a standard push pin.
I hate the screw setup. So stupid.

Quick question, what does the “weep hole” do?
My Colt competition H-BAR has the standard size pin holes but no weep hole? Can I install a regular pin and detent?
It’s a post ban AR so no evil features like a flash hider or bayonet lug.

Do the HBAR's with their restrictive modifications have history of malfunctions?

quote:

Originally posted by KMitch200:

Quick question, what does the “weep hole” do?
My Colt competition H-BAR has the standard size pin holes but no weep hole? Can I install a regular pin and detent?

The weep hole is so you can put a drop of oil into the spring for the forward pivot pin detent spring.

And IIRC, you can replace the screw captured pivot pin with a regular captured pivot pin and detent by adding the spring, detent and pin.

Warning
That detent will self launch into the stratosphere, so watch a few videos about installing it, or put a large ziplock over the work area to help find it when it’s time for launch. I’ve only done it 2 times where I didn’t launch the detent-so good luck, don’t die.

quote:

The weep hole is so you can put a drop of oil into the spring for the forward pivot pin detent spring.

And it means that it has been machined to accept a traditional pivot pin with detent and spring


I did order a Wilson Combat semi auto complete bolt carrier from Buds. After ordering I realized I could have also gotten a full auto one because mine doesn't have the trigger block, Derrr

quote:

Originally posted by MikeinNC:
Warning
That detent will self launch into the stratosphere, so watch a few videos about installing it, or put a large ziplock over the work area to help find it when it’s time for launch. I’ve only done it 2 times where I didn’t launch the detent-so good luck, don’t die.

Ahh, just like the 226 mag catch stop! I only waited a week for the replacement to arrive.

Is there a history of Colt HBAR's jamming because of the hinge pins, bolt carriers and/or sear blocks?

quote:

Originally posted by RichardC:
Is there a history of Colt HBAR's jamming because of the hinge pins, bolt carriers and/or sear blocks?

I have a post ban Colt AR excuse me, Match Target Competion HBAR.
It has NEVER malfunctioned.

You can’t use a M16 profile BCG because of the sear block and since Geissele makes a great trigger for the dumb oversized pins that function with sear block in place, that’s what it has in it. The screw hinge pin is dumb but it doesn’t cause malfunctions, just a PITA.
Which reminds me…I should change out that buffer spring after 30 some years.

It shoots great with 77gr match ammo at my altitude.