Modern Sporter - Build Discussions

[556tar21]

So I received my set. Looks awesome.

Now I tried to put it together with a LPK I had gotten from TNA 2 years ago Just a regular kit. Using the roll pin kit I tried to install the bolt catch, but the pin expanded.. Even using a 5/8 pin. So it's screwed up.

And I have lost the trigger part... So I'm looking for a better quality LPK. Higher end one of its not crazy expensive. Maybe a hipertech trigger?


Any suggestions would be helpful. I have no experience with AR type rifles, except the DDM4 I used to have.

Also the DDM4 we quad rail wouldn't fit the upper so had to sell that and now gonna get a delta ring and install a DD Omega rail. Unless someone has a good suggestion for ap Picatinny railed foreend or mlok.

Any suggestions or advice would be appreciated.

May I suggest a build party in or around Ottawa? Would like to at least shoot it once before they get banned

I picked up a CMC lpk for 75. Worked awesome
If your referring to hiperfire triggers the premium models interfere with the rear “takedown” pin when assembling so I used a geissele
For ease of assembly I recommend a dedicated ar punch kit (especially for the bolt catch) I use a cheap wheeler kit and works well

[shotgun]

I picked up a CMC lpk for 75. Worked awesome
If your referring to hiperfire triggers the premium models interfere with the rear “takedown” pin when assembling so I used a geissele
For ease of assembly I recommend a dedicated ar punch kit (especially for the bolt catch) I use a cheap wheeler kit and works well

Hey thanks for that. I'll check out the CMC kit. I didn't know that about hiperfire..I was gonna get the Designated Marksman Trigger.. maybe I'll stick to the basic trigger to start and see what I need to upgrade to.

I did use an AR punch kit that I had got to assemble the SLR (which never materialized). So glad I sent with the ATRS :D .

[shotgun]

Ergo enhanced lower parts kit w/o trigger fits perfectly. As do bcm rails.

That sounds good too.. I'll check em out. I have a hard time telling what's better quality since it all looks the same online. Was gonna order the Daniel Defense kit, but then I read somewhere that there were many plastic parts.. which I'm not too keen on.

[Nyksta]

Will piston kits work on a modern sporter?

[SuperDeadlyAccountant]

Will piston kits work on a modern sporter?

There's no reason why they shouldn't. Or really any reason to have a piston kit in the first place on a DI-designed gun.

[Whiteannerdy]

Will piston kits work on a modern sporter?

If you’re referring to the Superlative Arms Kit(BCG, Gas Block and Piston). I’m pretty sure someone in the facebook builders group has used one.

If it’s in your budget. I see no reason not to go with a Piston setup.

[greg olmstead]

Will piston kits work on a modern sporter?

Yes they do. A few people are running them with great success. The best part about them is that all the carbon stays out of your upper and off the bcg. The superlative arms kits are supposed to be great

[Nyksta]

There's no reason why they shouldn't. Or really any reason to have a piston kit in the first place on a DI-designed gun.

different strokes for different folks

[ColinD]

I was thinking about a superlative piston kit for my 300blk build (carbine length, 18.6"). I may end up with one if I find that some loads won't cycle reliably.

[SuperDeadlyAccountant]

If it's the Superlative Arms piston kit you're looking into, then I recommend you also buy a ©rap load of magazine release springs since that's what the piston uses and it eats them faster than Trump condescends himself.

It would also be a good idea to look into the POF anti-tilt buffer tube. Superlative Arms claims their carrier design is already anti-tilting, but are you really going to trust them on that seeing as they already chose to use a dinky magazine spring (read: not designed for intensive use) as the piston spring?

Overall, I stand behind saying there's no reason to get that kit especially in a gun designed to be direct impingement. If anything, the DI gun is more reliable that this piston kit since you don't need to change anything until 10s of thousands of rounds, compared to every 2K or so with the kit.