Grizzly 14 inch 2019 prod Questions

The Cocker

The Cocker

CGN Regular
Location
Fraser Valley B.C
Are the rear fixed sights meant to be removable? Just want to confirm before I hit it with penetrating oil and heat. I had tried unscrewing the rear screw with the proper sized screw driver, but the head began to disform.

What's the specs/thread pitch for the screws I'd need for the receiver rail holes? I'm planning on plugging them off with some grub screws.

Lastly, which choke size do these come with?

The shotgun is very decent for the price. Compares very closely to my pre freedom arms remington 870 express, inside the receiver is almost as clean as far as machining marks.

Edit (Answers):

Choke: Choke that came with it has 3 notches, so that should be a modified choke, and is threaded for Winchoke.
A common M4-0.7x8 machine screw with counter sink head fit perfectly in mine as a replacement.
 
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I take out my Grizzly and take a look , Norinco is not the same as Dominion although they share a lot of parts , Norinco use a lot of soft metals beside the barrels and receivers . If you are satisfied with the performing , better leave it as is . I had been breaking my tools to adjust the windage rear sight that look like simple job , also had ugly marks leaving on the firearms .
 
Yeah, they're basically the same thing more or less. I was mostly hoping to remove the rear sight for use with other Rem 870 barrels that I have. If it's more of a PITA than applying a reasonable amount of heat and penetrating oil, I don't think I'll bother. I don't want to get into using a screw extractor or carefully drilling it out.

I guess in a way it's better that the screw is much softer than the receiver metal, harder to end up with stripped holes like on a 10/22.
 
Thanks, unscrewing easily definitely isn't the case with it. I'll hit it with some heat. If the head continues to strip, I'll tap the screw driver in a little and give that a go. I'm assuming they wouldn't have used a thread locker from the factory on this thing.
 
I own a 2016 with the Ghost Ring sights. Mine uses flat head screws and I had to lightly tap the bit in before she would turn without deforming the head. I plan on replacing this sight with one of them Ardius setups or an XS Sight Rail. Although I’ve never had to adjust the DA Grizzly sights after first sight in it worries me knowing those screws are garbage.
 
Which style does your's have, ghost ring? Mine's more of a rifle rear sight. I'll just replace the screw with a fresh hex or torx head one of some sort once I'm done mangling it.
 
The front screw under the sight spring came out very easily. The head of the rear screw was completely destroyed, but no damage or marring on the gun. Had to blast it with a heat gun for a while and hammer a screw driver into the head to get enough grip. That was all after letting pen oil soak in for a few hours.

Not seeing any clear visible signs of thread locker. Might have just been friction from where the bottom of the counter sink head screw is digging into the top of the rear sight spring.

Now that it's out, here's some specs as I measure them, incase it helps someone later. Bottom of the head is countersunk, thread pitch M 0.7 , nominal length ~5mm to 5.07mm, 3.93mm for the outer diameter, diameter of the head is 7.23mm. A M4-0.7x8 machine screw with counter sink head fit perfectly in mine as a replacement. Use a few coats of cold blue to colour match it.

Choke that came with it has 3 notches, so that should be a modified choke.
 
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Can someone show complete disassembly pics or even better a complete YouTube video??

Would be interested in one if I could confirm same quality as before......
 
I'll try to remember next week. I have to take it apart when I get something in the mail. Can take some pics of the inside of the receiver, bolt, slide rails, bolt carrier, exterior finish, etc. There's some sharp edges on the inside, and it was a bit rough until I pumped the daylights out of it. Smoothed up pretty well, and I'm still overall very happy with it for the price, it compares favourably to my 2005 870 express, it's pretty close.
 
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CanAm said:
just a light sanding to match the metric tube
Click to expand...

A few moments later

428646342.jpg


996898523.jpg
 
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