Brownells a1 lower, I'd hole in back

[BR7.62]

I don't know what this hole is.

Sorry for an unusual thread here but I'm not a member at arfcom to ask...
Goes all the way through.

 

[B y r o n]

Have you tried contacting Brownell's and asking them directly?

 

[BR7.62]

Yeah just sent an email.
I figured I can't be the first...
Oh well she's built up now.
This wasn't one of the blems

 

[R.O.U.S.]

That's supposed to be there. It's supposed to be a clone of the earliest M16 receivers.

 

[BR7.62]

lol, really, no shit? youre fucking w/ me...

 

[Waorani]

Reproduction of early Colt AR-15 601 lower. Brownell's M16 repro doesn't have hole. Looks like for a roll pin - maybe a different buffer detent retainer?

Brownell's Gun Tech™ Note: The original Model 601 lower receiver was found on early AR-15 rifles produced by Colt Manufacturing from 1959 through 1963. These receivers were used on the first rifles issued to the Air Force - and those tested by the U.S. Army. The production numbers of original rifles with this type of receiver are quite low, making the BRN-601 an excellent base for a very unique "Retro" build.

Features of the Brownells BRN-601 lower receiver that make it a close replica of the original 601 include the front takedown lug profile and area surrounding the receiver extension.

 

[BR7.62]

i googled brownells m16a1 and looked at images. i did find a couple more w/ the hole but the rest dont.

 

[Waorani]

Look at pics on actual Brownell's site - not some mixed up shit google images returns. And here https://bpullignwolnet.dotster.com/retroblackrifle/ModGde/RflGde/601.html

 

[BR7.62]

ok i see that thank you!
that answers that then, i do find it weird that they dont all have it.
the other one of theirs i had was a blem w/ the markings on both sides, it didnt have it.
i was thinking maybe this was a blem of a different order.
thanks again
br-

 

[Rstrick0352]

Mac and Military Arms Channel addresses this in a review he did here:



Around 4min mark.

 

[BR7.62]

Thanks for posting that I'll watch more in the comp. Later.
I notice at the part you pointed out he is reviewing an earlier slab side.
Mine is a full fence mag well .it's no big deal either way whether it's correct or not I suppose.

 

[Rstrick0352]

Word, I did not catch the receiver difference at first I just remember him commenting on what I thought was an unusual hole as well. Have fun with your build!

 

[Afkirby]

The 601 model had a roll pin through the bottom of the receiver extension (buffer tube). The reproductions have the roll pin and space for aesthetics , but are located slightly lower to not intersect the the buffer.