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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 12-26-2010, 11:18 AM
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Default REVIEW: LAR Grizzly OPS-4 Upper Receiver

Hey guys,

I found this thread about the LAR Grizzly OPS-4 uppers but am unable to reply to it because of it's age.
http://www.calguns.net/calgunforum/s...d.php?t=263638

I'm starting a new thread because there was a comment in the old one about using a Magpul B.A.D. Lever with this upper.

Unfortunately, Magpul's product does not fit ANY version of the OPS-4 receivers due to the way the bolt catch area is machined. There just isn't enough room in the cut out for the B.A.D. Lever to wrap around the bolt catch.



The solution I have found for this is offered by Phase 5 Tactical. They offer a monolithic extended bolt catch that will work with the RIGHT side OPS-4 units only. If you use either the LEFT side or AMBIDEXTROUS uppers then you should look at their EBRv2-SC model instead.

Although I am not a technical person, I have written an overview of the OPS-4 upper receivers. Those who are interested can review it here:
http://www.702shooter.com/precision-...pper-receiver/
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  #2  
Old 12-26-2010, 11:42 AM
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You can bump it, the bottom just says "Do you want to?"

Saw your review. Looks cool but I would have to shoot a left side charging one before I bought one.
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Old 12-26-2010, 11:46 AM
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Quote:
Originally Posted by joelogic View Post
You can bump it, the bottom just says "Do you want to?"

Saw your review. Looks cool but I would have to shoot a left side charging one before I bought one.
Ah, now that you point it out, I see what you mean. Guess I should have read more than the first few words.

Obviously I'm new to this forum and need to learn it's quirks. Thank you.
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Old 12-26-2010, 11:52 AM
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No problem, welcome to Calguns. Do you have a video of someone shooting it? I wonder how many rounds it would take to work the charging handle loose.
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Old 12-26-2010, 11:57 AM
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Quote:
Originally Posted by joelogic View Post
No problem, welcome to Calguns. Do you have a video of someone shooting it? I wonder how many rounds it would take to work the charging handle loose.
Thanks for the welcome.

I have a couple of video clips from when we broke in the barrel on the rifle we just gave away but they are not online yet.

As my review mentions, I've owned a Young Manufacturing side charging system for awhile now. I'd estimate that I've run about 5k rounds through it and the handle has never worked loose.
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  #6  
Old 12-26-2010, 12:15 PM
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Shameless plug
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  #7  
Old 12-26-2010, 12:31 PM
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I found this today. It looks quite interesting. CLICK HERE!
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  #8  
Old 05-25-2011, 4:01 AM
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Just in case anyone was thinking of getting the ambi or left sided OPS-4, you CANNOT use any of the current Phase 5 tactical extended bolt release devices. I picked up the EBRv2-SC specifically because I read on this thread that it was compatible with the ambi.

Phase 5 did inform me that they are coming out with a new model that is specifically made for the OPS-4 ambi. I am waiting on that one. They said that I can send them back the other one I bought in exchange for the new model.

Last edited by 9th; 05-25-2011 at 5:55 AM..
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  #9  
Old 05-25-2011, 9:02 AM
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I just picked up one of these from http://elementarms.secure-mall.com/shop/. Billet, right hand version. I was hung up about which version (right, left, ambi) to get. I'm used to the left side charging handle because of my FAL. Now I have to assemble it just so I can see if I like it.

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Old 05-30-2011, 7:46 PM
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I just shot my ambi and I liked it a lot. Some people are worried about getting distracted by the charging handle flying back and forth, but I didn't even notice it when I was shooting. You do have to watch where you place your non-shooting hand though as it could get skinned if you get too close to the handle. Only issue I can see with this upper is that it would not be good for military use. Plinking, hunting, or maybe even police work is ok with it, but I can see tree branches, sand and other debris getting caught in the chamber or snagging on the charging handles while firing if this is used in combat.

Here are some pics of how I got around the bolt catch issue.


This is a picture of the bolt catch that came with the upper receiver. I didn't like it much at all so...


I picked up this modified bolt catch from Brownel's for $13 and dremeled off the main paddle, which can be seen by the hammer.

And these next 2 pics are the upper installed on my AR:



Oh and before anyone makes fun of me for putting bipods on this rifle, they're on there because my rifle kept falling over when I was taking pics of it.

Last edited by 9th; 05-30-2011 at 8:01 PM..
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  #11  
Old 05-30-2011, 8:07 PM
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Hey, I also received the LAR OPS-4 ambi upper last week.

Whats the best way to remove the handle? Its on tight!
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  #12  
Old 05-30-2011, 8:10 PM
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I wrapped the handles with cloth to protect them from scratching then used a pair of pliers to unscrew them. Came right off.
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Old 05-30-2011, 9:56 PM
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Why not just use an Allen wrench?
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Old 05-30-2011, 10:30 PM
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I tried an Allen wrench, but didn't try too hard since my lower receiver is still in jail and it seemed the amount of force it would take to twist it free might damage it.

I'll try the cloth and pliers and report back.
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Old 05-30-2011, 10:35 PM
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If using a tool to take off a bolt harms the upper it not really worth buying, right?. I have the ambi and it came off just fine with an allen wrench.
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Old 05-30-2011, 10:50 PM
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It was only difficult to take off the first time. I guess they tightened it a bit to make sure it didn't fall off during shipping. Plus I didn't notice the hex slot until AFTER I had used the pliers. I was too excited to look closely. After that, I just hand tighten the handles. They never came loose during shooting.

Last edited by 9th; 05-30-2011 at 10:54 PM..
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  #17  
Old 03-21-2012, 5:59 PM
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Is ElementArms the only place to purchase these? I tried to contact LarGrizzly but no response.
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  #18  
Old 03-21-2012, 7:50 PM
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I bought mine direct. Give them a call.
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Old 03-22-2012, 6:47 AM
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Plus one for Element Arms. Call them to see if they have in stocks and they ship fast!

About what the OP has said about the handles coming loose.

For me they always loosen but not fall off after about 100 rds even pretightening with Hex wrench. YMMV. It's ok it's just my range fun gun.
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Old 03-22-2012, 10:05 AM
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anyone have a picture of what their forged version looks like. I can imagine but seeing a pic would be better
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Old 03-22-2012, 10:17 AM
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I have a forged, honestly, the guys at LAR said that the Forged is great and they prefer it over the billett, but i'm not here to say that one's better than the other, but it did save me alot. FYI, the forged and billett look identical , I'll post one up of my rig with the forge later tonight.
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  #22  
Old 03-23-2012, 8:52 AM
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Just put it together!




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Old 03-23-2012, 8:56 AM
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Very nice! Is that the forged or billet?
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Old 03-23-2012, 8:59 AM
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Forged.
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Old 03-26-2012, 9:54 PM
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Forged
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  #26  
Old 04-12-2012, 5:55 PM
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Quote:
Originally Posted by hcbr View Post
I have a forged, honestly, the guys at LAR said that the Forged is great and they prefer it over the billett, but i'm not here to say that one's better than the other, but it did save me alot. FYI, the forged and billett look identical , I'll post one up of my rig with the forge later tonight.

This^^^

Here's another forged one.

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  #27  
Old 04-13-2012, 7:26 AM
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pfft called lar grizzly and they are back ordered for 12 weeks......for anything.
I don't see where all their uppers are going there are only 2-3 vendors online that carry them and are out of stock. Must be going to brick and mortars.
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