Modern Sporter builds Q&A

The rods definitely don't work, it's a dumb design by v7.
The port door works great on mine and locks in good using a standard rod and spring. I did have to clip the end of my spring as it was forcing the door open. ( The short end of the spring got clipped.. sorry no pics
 
I’m ditching the Maritime Bolt Catch and going with the BAD Bolt Catch.

I found the Maritime a bit sloppy and gritty, and a bit to big .. ha ha
 
purplezuk said:
The rods definitely don't work, it's a dumb design by v7.
The port door works great on mine and locks in good using a standard rod and spring. I did have to clip the end of my spring as it was forcing the door open. ( The short end of the spring got clipped.. sorry no pics
Click to expand...

Hey thanks for mentioning that. I will look at mine tomorrow and see if maybe that’s what’s part of my issue.
 
So I don't have the barrel installed yet, as I am waiting on another for this upper but it looks like the Odin O2 lite handguard is good to go as far as the anti rotation tabs. Looks like they just clear the sides of the upper with the rail lined up.
I will update once I get the barrel.

20190215_220621.jpg
 

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Forgive my ignorance, anybody have any trouble with the 10/30 mags by ASC? I want to buy a bunch. My set won't show up for a few months so I want to make sure I'm not buying something that doesn't work.
 
hardyshooter said:
Anyone having mag seating issues? Both metal mags and pmags won't work in either upper. Have one lower currently. It seems the upper sits rear ward on the lower, creating a lip inside the magwell that prevents the mags from seating. The upper and lower fit snug with very little movement so this seems strange..
Click to expand...

IMI beo mags do not fully seat, due to the slight (literally 1-1.5mm) overhang of the upper at the front of the magwell. My Pmags and E-lander steel mags lock and drop free perfectly.

ATRS, I hope you can adjust the clearance a bit in time for the FA run as this is kind of annoying. Eventually my SS upper will become a 6.5, so I'm not worrying about trying to rectify this but it would be a deal breaker on the FA.
 
Brianma65 said:
I’m ditching the Maritime Bolt Catch and going with the BAD Bolt Catch.

I found the Maritime a bit sloppy and gritty, and a bit to big .. ha ha
Click to expand...

I was going to go with the BAD billet one, but then found War Sports bolt catch. Its melonited stainless and cost just over 40 bucks. Send a PM if you want to know where I got it, non forum sponser I believe.
 
Brianma65 said:
I’m ditching the Maritime Bolt Catch and going with the BAD Bolt Catch.

I found the Maritime a bit sloppy and gritty, and a bit to big .. ha ha
Click to expand...

I was going to go with the BAD billet one, but then found War Sport Industries bolt catch. Its melonited stainless and cost just over 40 bucks. Send a PM if you want to know where I got it, non forum sponser I believe.
 
apex survival said:
I was going to go with the BAD billet one, but then found War Sport Industries bolt catch. Its melonited stainless and cost just over 40 bucks. Send a PM if you want to know where I got it, non forum sponser I believe.
Click to expand...

I think I know where you got it.
Anyway, I already ordered the BAD one , but now I see that there’s two offered.
And I ordered the cast one.Should be good , I guess.
 
So back to the modification of the cmmg kit to fit the sporter. I took some pics to get ideas. My upper is still in Canada post land. But looks like the lower main support bar if shortened a little bit will work as there’s lots of room when the bcg moves backward to re chamber a new round.
https://i.postimg.cc/wM4X1ZwT/4-F6-BD5-B4-B713-456-C-B9-F5-E4150-BAC5191.jpg
https://i.postimg.cc/RVq1kC03/6-BB89-C6-D-DDF3-44-F0-85-C3-0-E3-FDFE62243.jpg
https://i.postimg.cc/ZYwFsvJt/A25-AFB36-CCF1-4700-B0-BB-DBCC73-D16-B6-C.jpg
https://i.postimg.cc/PJ5brTzR/A5-FEE4-B8-D661-4-F64-9740-9-F2-E9-C5-D3-E20.jpg
 
Looks like you could shorten and re weld the lower main support....Depends on if the spring will coil bind on open bolt......looks like you might have to shorten the spring... and spring guide and tube as much as the support bar.....

"I dunno, .22's are kinda cool....."
mASPdEB.gif
 
Either that or cut off the tab and on the back and tack on peice of angle to move where it’s attaches to spring forward . Having just the circle in back should let it go into buffer tube .
 
blupul said:
Either that or cut off the tab and on the back and tack on peice of angle to move where it’s attaches to spring forward . Having just the circle in back should let it go into buffer tube .
Click to expand...

Yeh doing that the bolt will not open fully so the spring and tube that captures the spring that attache's to the bolt would have to be shorted too.... looking at photos. Its hard to tell when its not in your hands.

4-F6-BD5-B4-B713-456-C-B9-F5-E4150-BAC5191.jpg

A5-FEE4-B8-D661-4-F64-9740-9-F2-E9-C5-D3-E20.jpg
 
Looking at it now i see what you mean . Either way it’s done the spring and guid rod will need to be shortened. I’m glad this thread exists. Looks like the 2a kit will be the one I choose . Then into the chop saw and hack .175 off the back. Anyone know where to get the 2a kit already tried the google
 
blupul said:
Looking at it now i see what you mean . Either way it’s done the spring and guid rod will need to be shortened. I’m glad this thread exists. Looks like the 2a kit will be the one I choose . Then into the chop saw and hack .175 off the back. Anyone know where to get the 2a kit already tried the google
Click to expand...

Can’t find it in Canada, a US importer has them. ATRS might be able to bring them in. I am just not sure if it’s compatible with dedicated 22LR Barrel, chamber end doesn’t look like mine. Should be able to sub it out with a 22LR/223 conversion kit though.
 
blupul said:
Looking at it now i see what you mean . Either way it’s done the spring and guid rod will need to be shortened. I’m glad this thread exists. Looks like the 2a kit will be the one I choose . Then into the chop saw and hack .175 off the back. Anyone know where to get the 2a kit already tried the google
Click to expand...

I’m thinking the same. If I can get one then sell my cmmg. I was planning on shooting 22lr mainly from
My sporter and hunt with it. I even have a 1-12 barrel going on it.
 
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