Modern Sporter - Build Discussions

[hannibal.black98]

Awesome thanks! Standard buffer system I assume? I’ve been loving my silent capture springs from armaspec and JP.

The .22 bolt cycles within itself.

[hend238]

That was on early models. The Modern Sporter came directly from the Modern Varmint, and the Modern Varmint never used a buffer retaining pin, they came with JP silent capture springs. A side effect of this was that we had a thicker tail end on the receiver. I can't recall exactly, but I think that was remedied around serial number 100 or so, Maybe it was #200.

Thank you sir.

[lj007]

The .22 bolt cycles within itself.

Whoa! Can I take the buffer and spring out of my 22 conversion?

[hannibal.black98]

Whoa! Can I take the buffer and spring out of my 22 conversion?

Well no, the buffer system holds the bolt in place still!!!

[Nyksta]

How is the accuracy of 22lr that typically uses 16 inch twist when using 5.56 nato barrels with typical twist rates of around 1:8" twist? would cci minimags ammo work well with cmmg conversion kits?

[Bfranklin]

Anyone know where one can purchase one of the CMMG kits?

[ColinD]

can anyone give me a quick rundown on the CMMG .22 conversion (or if there is a better version I'm all ears)? I have a spare upper laying around and I'm leaning towards a .22 but I don't know what's all needed for that. If you can provide a full parts list and what needs to be done modification wise that'd be sweet! I assume its something I'll have to get ATRS to do.

Thanks!

If you have a spare upper, I’d highly recommend making a dedicated.22lr
Check out the 22lr modern sporter thread on the ATRS page of CGN.

I made one and it is the funnest and most reliable 22 I have.

[UR2X3M4ME]

Question on buffer tube length.

Putting a 18.6'' barrel on my MS build, trying to keep it NR. It will have a rifle length gas system.

My intention was to strip the buffer tube & stock from one of my carbines (a Diemaco SA-15.7 or a Core15, both with carbine gas system) and to fit it to this build.

Other than stripping an original Diemaco (I know...), is it a mistake to fit a carbine buffer tube? Should it be a rifle length?

Not sure how one affect the other so thank you in advance for schooling me on this

[deadman]

Question on buffer tube length.

Putting a 18.6'' barrel on my MS build, trying to keep it NR. It will have a rifle length gas system.

My intention was to strip the buffer tube & stock from one of my carbines (a Diemaco SA-15.7 or a Core15, both with carbine gas system) and to fit it to this build.

Other than stripping an original Diemaco (I know...), is it a mistake to fit a carbine buffer tube? Should it be a rifle length?

Not sure how one affect the other so thank you in advance for schooling me on this

I was just looking into this same thing (I'm a newbie to the platform). From what I've read, it shouldn't be an issue. Might have to play with buffer weight to find a balance your rifle likes.

FWIW, this was info I got from some discussion on ar15.com. They mentioned the CF rifles with adjustable stocks.

Disclaimer: I don't pretend to know anything about the rifles our military is issued. Just what I read, any member here can correct me please.

Edit: I'm planning on trying this with mine, the consensus seems to be that using a regular carbine buffer with the rifle length gas system is good to go, some say play with buffer weight. Just wanted to clarify, but I haven't tried it myself yet.

[G.Mitchell]

Anyone running a Radian enhanced bolt carrier group? Any issue with it opening the dust port/cover?