MSR vs SLR?

I have an early serial numbered SLR and the takedown bolt's retaining screw does NOT retain the takedown bolt. It slides past and falls right out.



I don't care what anyone says, they should have had one takedown pin cross ways through the receiver. There's enough material there that it could have been done.

Bolts and helicoils are for amateurs.

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One of my receiver sets is numbered under 20 and my retaining screw DOES retain the takedown bolt. I don't love the takedown bolt, it was super annoying during barrel break-in...but my assumption is it helped in getting this classified as NR by the RCMP.
 
One of my receiver sets is numbered under 20 and my retaining screw DOES retain the takedown bolt. I don't love the takedown bolt, it was super annoying during barrel break-in...but my assumption is it helped in getting this classified as NR by the RCMP.

As long as the upper could not be jerry rigged to work on an AR lower, it would get classified as an NR. How it attaches is not a factor, the Lab has gone so far as to use wire to attach an upper to an AR lower, since it only has to fire once to be a "variant" in their world.
 
There are reasons for the bolt vs push pin.

Well the screw set up has ZERO impact on legal classification, so many of us are at a total loss as to why a screw was used so some enlightenment would be great.

As long as the SFSS could not wire, or duct tape to discharge a single round with either the upper or lower to a corresponding AR upper or lower it is not deemed to be a variant, hence NR status. Ask me how I know?
 
Well the screw set up has ZERO impact on legal classification, so many of us are at a total loss as to why a screw was used so some enlightenment would be great.

As long as the SFSS could not wire, or duct tape to discharge a single round with either the upper or lower to a corresponding AR upper or lower it is not deemed to be a variant, hence NR status. Ask me how I know?
Hey, stop wasting time on here and get back to work.. I need my upper:)

JK
 
You can’t lose the screw as there is a smaller screw thst won’t allow it. No doubt pins are more convenient for cleaning but honestly, loosening a screw takes a few seconds. Given the choice I would take pins like on an AR15 , but the screw does work. It’s truly only a big deal if someone wants to make it a big deal.

I only have 200 rounds through mine but the screw is not moving, which seems typical for most users. I did read one or two accounts of loosening screws but they don’t seem to be the norm.


200 rounds....... that’s barely a break in period. The screw is just plain silly for a modern rifle. At some point you’ll have to stop lying to yourself. I can’t help but imagine you explaining this farce to uneducated new comers and having them see it as truth. The system looks awesome. Probably runs awesome. Just like any AR , but, has a flaw that it cannot come back from. We get that you love your new rifle system and are proud of it but not seeing the truth for what it is speaks loudly about you. Sounds like you did have a choice tho, ATRS was the second option. Most people’s first. No ones knocking you for it. We all love our black rifles here.
 
200 rounds....... that’s barely a break in period. The screw is just plain silly for a modern rifle. At some point you’ll have to stop lying to yourself. I can’t help but imagine you explaining this farce to uneducated new comers and having them see it as truth. The system looks awesome. Probably runs awesome. Just like any AR , but, has a flaw that it cannot come back from. We get that you love your new rifle system and are proud of it but not seeing the truth for what it is speaks loudly about you. Sounds like you did have a choice tho, ATRS was the second option. Most people’s first. No ones knocking you for it. We all love our black rifles here.



Nonsense.

If the rifle works for the purpose I want it to, what is the flaw?

As I said before, we all like pins for easy takedown. But that’s it, that’s all. If the screw does the job, that’s all that matters.

I have an ATRS lower for my 50BMG thst uses a similar system- a screw holds the upper and lower together from the bottom of the front of the receiver. Although it doesn’t have the added benefit of the MDI system that slides together, it just sits in a recess and has a screw that holds the front together. It works fine.

I think some people spend too much time thinking about SHTF scenarios where they need to field strip thier rifle to clear it before the imminent zombie attack. :)
 
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I have an early serial numbered SLR and the takedown bolt's retaining screw does NOT retain the takedown bolt. It slides past and falls right out.

View attachment 235729



I don't care what anyone says, they should have had one takedown pin cross ways through the receiver. There's enough material there that it could have been done.

And by eliminating the takedown bolt they could have made the front of the magwell lower so there was a decent looking magwell profile. So much fail just because of using a stupid bolt.

Bolts and helicoils are for amateurs.

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...and I don’t care what anybody says as this is no big deal unless you make it one. Secondly regardless of how bad you feel the upper and lower are more snug then a real AR with pins. No need for grip tension screws or accu wedges.
 
Nonsense.

If the rifle works for the purpose I want it to, what is the flaw?

As I said before, we all like pins for easy takedown. But that’s it, that’s all. If the screw does the job, that’s all that matters.

I have an ATRS lower for my 50BMG thst uses a similar system- a screw holds the upper and lower together from the bottom of the front of the receiver. Although it doesn’t have the added benefit of the MDI system that slides together, it just sits in a recess and has a screw that holds the front together. It works fine.

I think some people spend too much time thinking about SHTF scenarios where they need to field strip thier rifle to clear it before the imminent zombie attack. :)

Doesn’t everyone have a “REAL” AR 15 for that?..... I sure hope so.
 
...and I don’t care what anybody says as this is no big deal unless you make it one. Secondly regardless of how bad you feel the upper and lower are more snug then a real AR with pins. No need for grip tension screws or accu wedges.

Yes, the SLR's upper and lower fit together snug. Big deal.

FYI, tension screws and accu wedges for the AR were only invented to shut up the whiners who couldn't grasp the concept that the wiggle has no negative effect on accuracy or function.

They serve no beneficial purpose whatsoever as the bullet will have exited the muzzle of the rifle long before movement of the receivers produces any measurable effect.

Degradation in the AR's accuracy due to receiver wiggle is a myth. Likewise an increase in the SLR's accuracy due to a snug receiver fitment is nothing more than another myth.


Doesn’t everyone have a “REAL” AR 15 for that?..... I sure hope so.

Yes, but not in this country.
 
Yes, the SLR's upper and lower fit together snug. Big deal.

FYI, tension screws and accu wedges for the AR were only invented to shut up the whiners who couldn't grasp the concept that the wiggle has no negative effect on accuracy or function.

They serve no beneficial purpose whatsoever as the bullet will have exited the muzzle of the rifle long before movement of the receivers produces any measurable effect.

Degradation in the AR's accuracy due to receiver wiggle is a myth. Likewise an increase in the SLR's accuracy due to a snug receiver fitment is nothing more than another myth.




Yes, but not in this country.

Do you think if the zombies come they will remain below the 49th? Come on really.

Second regardless of the myth many shooters don't like the feel of a clacker in their hands so a snug fit is preferred.
 
Yes, the SLR's upper and lower fit together snug. Big deal.

FYI, tension screws and accu wedges for the AR were only invented to shut up the whiners who couldn't grasp the concept that the wiggle has no negative effect on accuracy or function.

They serve no beneficial purpose whatsoever as the bullet will have exited the muzzle of the rifle long before movement of the receivers produces any measurable effect.

Degradation in the AR's accuracy due to receiver wiggle is a myth. Likewise an increase in the SLR's accuracy due to a snug receiver fitment is nothing more than another myth.




Yes, but not in this country.

Just out of curiousity what issues did you have with your slr? Takedown screw coming loose?
 
Just out of curiousity what issues did you have with your slr? Takedown screw coming loose?

Mainly tollerance issues. Parts simply would not fit. Had to open things up myself so parts could be installed. Bolt catch roll pin and safety selector hole were the worst. Had to open the safety selector hole up until I was down to bare aluminum just to get a safety selector to slide in and toggle. It was NOT the parts fault as I tried parts from a few manufacturers just to make sure the fitment issues weren't because of an out of spec part.

Upper receiver not machined with a small enough radius in the corners where the top of the mags insert. Poly mags would fit but not a single metal mag would because they have squarer corners. Had to get the dremel out.

Takedown bolt isn't retained.

Takedown bolt started coming loose. Solved that by sizing a Nord-lock washer to fit. I honestly think it's the type of bolt they used that's causing this. It's really smooth and turns in and out really easy. A basic pistol grip screw fits snugger.

It seems these issues have, to the most part, been addressed and the latest receivers released are better but my experience was enough to make me want nothing to do with another one.


I have 3 of my 5 MS lowers already and every single part, roll pin, screw etc... installed perfectly. No power tools or curse words required.

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I had the guys at ATRS remove the chicken manure helicoil and install a machined insert. It looked FAR more professional. After trying to get the safety in, which would not fit, I dumped it my SLR project and am happy to wait a little longer for the upper to complete my MS.
Maybe in time Crapabee will get their stuff sorted out but all the hype and hot air would have been better off being used to heat their shop, but for now they seem to be in the same league as NEA in so far as quality of product goes. Some of the SLR's are ok and many others not so much. Maybe I just was unlucky, but it seems there are quite a number of us in that same canoe.
 
Do you think if the zombies come they will remain below the 49th? Come on really.

First of all, my decision not to own a type of firearm this side of the border that I have to register with my own government has nothing to do with zombies. I never once mentioned zombies.

Second of all, if you actually think zombies are coming you're... :onCrack:

Second regardless of the myth many shooters don't like the feel of a clacker in their hands so a snug fit is preferred.

Thank you for admitting that it has everything to do with the mind set of the shooter and nothing to do with the platform.
 
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Holy hate for the SLR. Why people aren't just happy that more and more non-ARs that take AR parts are available, is beyond me.

You guys must be relatively new to guns or really young.... Because this current situation has been a long time dream for a lot of us.

Personally - very happy with my SLR. Have about 600 rounds down the pipe - zero issues. The takedown screw did actually loosen up over about 500 rounds, but was still fully seated - just not tight. Two seconds with an Allen key and it's tight again.

ATRS makes a nice product for sure (I have two billet ATRS lowers), but the SLR was available when I needed it. In the end - competition between companies drives improvements, innovation, and price decreases. :)
 
Holy hate for the SLR. Why people aren't just happy that more and more non-ARs that take AR parts are available, is beyond me.

You guys must be relatively new to guns or really young.... Because this current situation has been a long time dream for a lot of us.

Personally - very happy with my SLR. Have about 600 rounds down the pipe - zero issues. The takedown screw did actually loosen up over about 500 rounds, but was still fully seated - just not tight. Two seconds with an Allen key and it's tight again.

ATRS makes a nice product for sure (I have two billet ATRS lowers), but the SLR was available when I needed it. In the end - competition between companies drives improvements, innovation, and price decreases. :)

Very well said.
 
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