Modern Sporter - Build Discussions

[jiffx2781]

...

 

[HotSoup]

Well, I finally got around to mailing in my upper and barrel to ATRS to install. In a couple weeks Ill finally be able to to test mine out.

 

[QuickDraw16]

Port cover pin hole is a wee bit too shallow.

Agreed, I took my pin out and shortened it by .03125in and it fits perfectly now.

I split two bolt catch roll pins trying to drive them using the wheeler bolt catch roll pin tools. I suspect that the hole may be a tad tight...

 

[jiffx2781]

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[DILLIGAF]

My roll pins also had no issues going in. Did you check to see what size the hole was ?

 

[Sqr]

Agreed, I took my pin out and shortened it by .03125in and it fits perfectly now.

I split two bolt catch roll pins trying to drive them using the wheeler bolt catch roll pin tools. I suspect that the hole may be a tad tight...

Sounds familiar.

 

[HotSoup]

I’ll just leave this here... lol

hahaha, in this case I cant get enough torque by hand to index the Colt barrel nut properly to get the gas tube in. Other barrel nuts I've done by hand werent traditional style.

 

[Sqr]

hahaha, in this case I cant get enough torque by hand to index the Colt barrel nut properly to get the gas tube in. Other barrel nuts I've done by hand werent traditional style.

Lapping the Receiver or shims will facilitate correct timing.

 

[alberta tactical rifle]

Agreed, I took my pin out and shortened it by .03125in and it fits perfectly now.

I split two bolt catch roll pins trying to drive them using the wheeler bolt catch roll pin tools. I suspect that the hole may be a tad tight...

No I would suspect your pins were out of dimension. After seeing what the "other guys" got a ton of flak over we pin gage every hole before the part goes for anodizing and again when it comes back.

 

[d.kurp]

Ive had out of dimension roll pins before, switch to a different roll pin and in it goes. Even after I had one of my lowers cerakoted, I had no problem installing a pin.

 

[QuickDraw16]

First time I've heard this complaint about the MS. I did my 3 lowers that I have so far and the roll pins tapped in as smooth as butter.

On first thought, did you use a bit of oil when you installed the roll pin?

On second thought, are you sure you aren't talking about the ### receiver?

I lubed both. They started fine but after a couple taps the first one mushroomed. I removed it (which was a pain) and then tried a new pin.

No I would suspect your pins were out of dimension. After seeing what the "other guys" got a ton of flak over we pin gage every hole before the part goes for anodizing and again when it comes back.

The pins were from different vendors and purchased close to a year apart.
Maybe I’ve just got bad luck and happened to get two out of spec pins under extremely weird circumstances.

 

[jjuice]

We would need to know the grade of material so as to be able to order the correct inserts and tooling, but it still won't be a cheap touch.

Are you guys actually considering this

I would be interested in a set + spare upper. Seems like a handful of people were interested.

 

[happyzappy]

Strike Industries strike rail will fit on the Modern sporter. Confirmation by a stand up company in Red Deer.

 

[blkmrkt]

I'm sure this has been asked but I couldn't find an answer anywhere....does the varmint upper fit the sporter lower?

 

[alberta tactical rifle]

I'm sure this has been asked but I couldn't find an answer anywhere....does the varmint upper fit the sporter lower?

No, they are totally different platforms despite looking similar.

 

[TommyT45]

Strike Industries strike rail will fit on the Modern sporter. Confirmation by a stand up company in Red Deer.

Do you know if it fits with or without modification??

 

[happyzappy]

Do you know if it fits with or without modification??

Without modification, was test fitted by rdsc as they had one on hand.

 

[DILLIGAF]

 

[Mik123]

Whoa! How close to completion?

 

[freefrom]

Please forgive me if this has been answered already but can you use any standard AR upper reciever with the MS lower? Or does the upper and lower have to be from ATRS to build?