Maccabee

You are not alone. I've contemplated doing this more than a few times. There is enough material on the lower to drill it out for the pin plus the material along the side of the receiver is thick enough to drill out for the detent pin and spring.

The only thing that keeps holding me back is the thought of how week the lug on the upper might become once that second hole is drilled cross ways through it.

If there was a way to fill the hole in the upper lug for the original bolt permanently prior to drilling the new hole cross ways it would be better but no matter how you do it I still think the strength would be compromised.

But just like your receiver, mine is also holding great with a nord-lock. The bolt takedown is just more of an inconvenience than it is a real problem.

Maybe once all my MS receivers arrive I will get brave and turn my SLR into a test dummy.

You guys are not alone about attempting it.

How about inserting some kind of soft threaded rod into the block before side drilling?
 
You guys are not alone about attempting it.

How about inserting some kind of soft threaded rod into the block before side drilling?

That could work. Common threaded rod is generally mild steel to begin with.

I'm just thinking that the helicoil would have to be removed first? and the hole (or whatever you're going to plug the hole with) would have to be resized to get a tight enough fit that nothings ever going to try and move?

Once the original hole is filled SOLIDLY the new hole for a cross pin should hold up. There's not really a ton of force against the takedown pin.
 
I though modifying a rifles receiver was illegal?

Does one of the dissatisfied macabbee owner want to sell me the upper? I need one for a 22lr top.
 
For clarity though the ATRS lower that was purpose built for the Canada Ammo DA50 upper you have has a 3/8" steel bolt, that engages a STEEL block that was welded to your DA50 upper. NOT a poorly installed cheapest HeliCoil solution possible. The problem I see with the Crapabee is not so much the use of a bolt to hold the upper to the lower, more the fact that the bolt is not always retained so can get lost despite the supposed retainer screw that was put in and the fact that a cheesy Helicoil was used and poorly installed at that. E]
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Yeah, well they are both bolts. Bolts/screws have long been used to hold stuff together. the complaint seems to be that it can come loose, but there are easy solutions for that (locking washer/nord loc washer) Mine isn't coming loose, but I might get a nordloc washer just to be sure. All my bolt action rifles use screws/bolts to hold them together and I will periodically ensure they are tight. I do this with scope mounts and rings too. The bolt is a non issue for me and many other people, but it's a big deal for you, and that's fine, we are all different.


Accuracy and weight are wholey determined by the parts used to put the reciever sets regardless of manufacturer together. Use a crap grade barrel and accuracy will be poor, use a match grade barrel and accuracy is normally very good. Same with weight, a bull barrel and PRS stock will make it weigh a ton. The reciever sets should not make any difference in accuracy and although I never weighed my Crapabee if it was more or less than a couple of ounces different from the Sporter I would be stunned.

Weight- The 2 receivers may be the same weight or different. That's all I'm interested in.

Accuracy- yes, we "know" that accuracy has nothing to do with the receiver in AR15 rifles. But these aren't AR15 receivers. I'm not saying there has to be a difference, but as we are dealing with two completely different designs, that there is a possibility of a difference.
 
At the range today trying out a new FA bolt carrier group and a CMMG trigger in the SLR. Three different mags with Fed .223 and Independence 5.56 both in brass along with last magazine loaded with steel case Barnaul 5.56 which all ran well.

 
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Looking good. I love my 6.5 Grendel, but the next one I build will be in some sort of .223, i want to be able to do some shooting and not sweat where the brass ends up. ;)
 
At the range today trying out a new FA bolt carrier group and a CMMG trigger in the SLR. Three different mags with Fed .223 and Independence 5.56 both in brass along with last magazine loaded with steel case Barnaul 5.56 which all ran well.


There's no doubt that these rifles function as intended. Mine does as well.

The main thing that people are complaining about is tollerance/fitment issues on early serial numbered receiver sets.

I got a low serial numbered SLR and it was a total mess. That being said once it was assembled I have had zero issues regarding functionality.

The problem I have with mine (and others who got early sets) is that we should have never received a product that didn't live up to the high expectations that were rightfully expected given the price point of these receivers.

IF I got a later receiver set (that seemingly has most of the issues ironed out) there is a possibility that I may have been happier with it. However what if's won't change the fact that I got a VW at Porsche pricing.

Here's mine. It does work. But due to the above I won't ever buy another.

View attachment 246002
 
There's no doubt that these rifles function as intended. Mine does as well.

The main thing that people are complaining about is tollerance/fitment issues on early serial numbered receiver sets.

I got a low serial numbered SLR and it was a total mess. That being said once it was assembled I have had zero issues regarding functionality.

The problem I have with mine (and others who got early sets) is that we should have never received a product that didn't live up to the high expectations that were rightfully expected given the price point of these receivers.

IF I got a later receiver set (that seemingly has most of the issues ironed out) there is a possibility that I may have been happier with it. However what if's won't change the fact that I got a VW at Porsche pricing.

Here's mine. It does work. But due to the above I won't ever buy another.

View attachment 246002

The Macdef and the WK180 both need to make a baby lower receiver with the proper magwell cut haha. Maybe I'm just too used to the magwell cut of an AR. I'm excited to blast mine some more, I am a little surprised at the tightness of the gi mags, but with a mostly pmag based use I am happy to report the pmags work beautifully.
 
Hmmm a lot of mixed reviews...very few like .....and a lot of dislikes......
Now to gamble on a set ...could be good or could be garbage
Thank you all who posted here
I did the same on gun owners of Canada web site
Same kinda response
 
Looking good. I love my 6.5 Grendel, but the next one I build will be in some sort of .223, i want to be able to do some shooting and not sweat where the brass ends up. ;)
Building a my second receiver as a 223 for that reason. Love the 6.5 Grendel, but it doesn't feel good when you lose brass!
 
Hmmm a lot of mixed reviews...very few like .....and a lot of dislikes......
Now to gamble on a set ...could be good or could be garbage
Thank you all who posted here
I did the same on gun owners of Canada web site
Same kinda response


Typical gun owner response to rough start for a company. I'm not saying that those who legitimately had problems have no reason to grumble, they clearly do. That said, take a moment to read between the lines and MDI SLR's pretty much to a set have gone together and are functioning, be it through some "fitting", or a new part to replace the out of spec one. I'd take one in a heart beat, my Fraken-HBAR would be the ideal candidate as a parts donor. I'll freely admit this though, if I had the coin to blow on a set, hands down it would be the ATRS MS at the current price for both items.

"a lot of dislikes"

Hang around here long enough and you'll start to see a pattern. Some company "drops the ball" and a certain number of seemingly reasonable members will completely loose their minds...it'll take awhile to figure out who's who. Unfortunately there's not much to be done till Friday, June 21, 11:54 A.M. EDT, The start of "Witch Burring Hour". I hope everyone has their effigies prepared, and burn them at the appointed hour to purge this sickness from our ranks.
 
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Later serial receiver sets aren't necessarily good either.

I was very lucky that CSC fully refunded my SLR (late 300s serial), as not only were the pin holes ridiculous (which I can tolerate as I have the right tools), Maccabee didn't even machine the upper properly, so any charging handle I used from Geissele to standard Mil-Spec would not fit. The set was a literal paperweight as I could not feasibly install the BCG and CH, which are much more serious problems than a tight/binding magwell or out of spec pin holes. CSC agreed and were great to deal with, they stood behind the product they sold so there is no sour taste left in my mouth with them.

I was fully onboard with the SLR when it came out, but I think waiting till the later "fixed" sets was enough of a chance from my end. Much happier with the pair of Sporters I ordered, the lower I already have has been by far the easiest AR lower I've ever assembled, I have never been able to merely push the trigger pins in and I've assembled plenty of decent to good quality lowers.

As much as I will thank Maccabee for at least doing the work in providing another NR AR-esque rifle to the market, buying one at this point is a crapshoot and there are much better products to put $1000 plus parts cost towards. The core design is so convoluted and has serious longevity issues, and I question future support from a manufacturer that managed to let an upper that couldn't even accept a charging handle through QA, when they have barely managed to create 400 or so sets in the first place.
 
For clarity though the ATRS lower that was purpose built for the Canada Ammo DA50 upper you have has a 3/8" steel bolt, that engages a STEEL block that was welded to your DA50 upper. NOT a poorly installed cheapest HeliCoil solution possible. The problem I see with the Crapabee is not so much the use of a bolt to hold the upper to the lower, more the fact that the bolt is not always retained so can get lost despite the supposed retainer screw that was put in and the fact that a cheesy Helicoil was used and poorly installed at that. IFWyatt had done it right they would have made a steel insert that was treaded into the upper and thread locked in place. Yes it would have cost an extra couple of dollars, but at least then would have been done right and would help justify his pricing. At it sits now it is a simple chicken manure way of attachment that could be done right. The other complaint is the overly complex trigger box design that just did not need to be there in the first place.
Many complain about the ATRS initial offerings only using a Timney trigger, which at least is a decent trigger thankfully, but being as they were the ones who started the whole NR semi auto thing for Canadians and there is no guidelines as to how close to an AR can you come and still be NR I understand why they did this. With Crapabee though they had 4 years of knowing that the trigger was NOT part of the equation as we see with BCL and Stag, so why over complicate things?


Accuracy and weight are wholey determined by the parts used to put the reciever sets regardless of manufacturer together. Use a crap grade barrel and accuracy will be poor, use a match grade barrel and accuracy is normally very good. Same with weight, a bull barrel and PRS stock will make it weigh a ton. The reciever sets should not make any difference in accuracy and although I never weighed my Crapabee if it was more or less than a couple of ounces different from the Sporter I would be stunned.


The Maccabee is heavier than the ATRS receiver set. Also added a Aero precision forged set & a Battle Arms Development lightweight set for comparison.

Maccabee Lower: 336.8g Upper: 252.1g Total: 588.9g or 20.77oz
ATRS Lower: 289.9g Upper: 268.5g Total: 558.4g or 19.69oz
Aero: Lower: 236.8g Upper: 201.6g Total: 438.2g or 15.46oz
BAD LW: Lower: 193g Upper: 178.5g Total: 371.5g or 13.10oz
 
The Maccabee is heavier than the ATRS receiver set. Also added a Aero precision forged set & a Battle Arms Development lightweight set for comparison.

Maccabee Lower: 336.8g Upper: 252.1g Total: 588.9g or 20.77oz
ATRS Lower: 289.9g Upper: 268.5g Total: 558.4g or 19.69oz
Aero: Lower: 236.8g Upper: 201.6g Total: 438.2g or 15.46oz
BAD LW: Lower: 193g Upper: 178.5g Total: 371.5g or 13.10oz

Glad to see my speculation was not far off. Don't know grams and am too lazy to convert it but 47 grams less than the Crapabee and 53 grams more than a decent AR seems to not be out of line to me. The NR factor is certainly worth 53 grams
 
My memory is not great but if I remember right ATRS said they wouldn't offer a stripped receiver set. Liability issues.
Then the MDI SLR was announced.
Suddenly the MS idea was floated.
Do we have MDI to thank for prompting ATRS to bring out the MS?
 
My memory is not great but if I remember right ATRS said they wouldn't offer a stripped receiver set. Liability issues.
Then the MDI SLR was announced.
Suddenly the MS idea was floated.
Do we have MDI to thank for prompting ATRS to bring out the MS?

Competition is a wonderful thing eh?
 
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