Warning

This is meant for as an intermediate weapon mentioned in my beginner Volt guide, and maybe mentioned in my intermediate [Rhino] guide if I ever write one, so no Orokin Reactor or Forma. However, this can still be used as an universal base for any basic assault rifles, just replace the Piercing Hit with your weapon specific damage modifiers. For instance, the [Boltor] used here deals more Puncture then Impact or Slash, so I used the Piercing Hit. But the basic [Braton] has more Slash then the others, so you might wanna use the Sawtooth Clip instead.

Acquisition & Explanations

Serration

As the mod's effect should probably tells you, this mod adds +165% damage at max. So getting this is a no brainer. This mod can be obtained by doing T1 (Level 5~15) Excavation and every 3rd, 7th, and so on drill will net you an 7.7% chance of getting one.

Speed Trigger

After adding more damage, I still want more DPS. So, I used Speed Trigger to buff the crap out of its fire rate (+60%). This gives me an extra 300 burst DPS and 200 sustained DPS. This mod can be obtained by doing Dark Sector Defence (any level) for 15 waves to get Rotation B reward for an 8.4% chance to get one.

Piercing Hit

After doing all those, I STILL want more DPS. So I went ahead and buffed my piercing damage. Now, I COULD use the more powerful Piercing Caliber. HOW-FREAKING-EVER, I need to get it from trade for around 15 plat (as of time of writing). And because this is a F2P guide (and definitely not because I'm a cheap skate), I chose the free Piercing Hit instead. And after some comparison, turns out maxing Speed Trigger gives you more DPS then maxing Piercing Hit. So there's another 100 DPS. Downside is, this mod is a random enemy drop, so good luck. But if you do have the plat to spare, DO grab it, max it, and just put a rank 1 Speed Trigger instead.

Credits

Last but not least, Credits. For some reason, this site never shows you the credit needed to level up your mods. So here is a quick run down. As you can see from the chart below, it cost over 1m credit to upgrade everything. So how the heck are we supposed to get that? Welp, the best in level credit farm is actually on Gabii, Ceres. Just by simply completing this survival mission gives 20k+ credits, the main point here is: COMPLETION. That's right, by simply completing this mission, you got 20k+ credits. And all it cost is 5 minutes. Also, the more player in your group, the more it pays, so make sure you set it on public.

Endo

And finally, Endo. You see that ball looking thing below the build name? That's right, that's endo. You WILL need it to upgrade your mods. The quick and simple way to do it is just do T1 Excavation and leave after 2 drills (every drill on rotation A has a 42.9% chance to get 100 endo) which cost around 6 minutes if lucky. So just rinse and repeat that at least 20 more times. Of course, then there are the Ayatan Treasures. Through out missions, you have a 1/7chance to get a sculpture spawn. So find them and fill them with stars, which have a random drop chance from storage containers and lockers (keep an eye out on either that white icon, and mark it for your group using "G" if not playing solo before picking it up). Ones completed, you can exchange them at Maroo at her Bazaar on Mars from 1,425 endo all the way to 2,700 endo.

Next Step

Warframe

After you have complete this, you should start farming for [Rhino]. You can farm his blueprints (beside the main one, that had to be bought from the market with 35k credits) on Fossa, Venus. The boss, Jackal's shield is weak against Magnetic Damage, which is made by combining cold and electricity, while his armor is weak against Electric Damage, so kill it's shield with something magnetic and blast away with shock (1st skill) or put down your shield (3rd skill) and blast through it. Whenever it tries to attack with the spinning Grid Wall attack, use your speed (2nd skill) to get out of the way.

Melee Weapon (MR3)

Grab [Galatine]'s blueprint from the marketplace for 25k credits once you [Reach] MR3. There is just nothing better at the level. Put a max Pressure Point on that bad boy (can be gotten from that Cetus Bounty on earth for a 20% chance or T1 (Level 5~15) Defence first 5 to 10 wave having 9% chance each) along with a max Killing Blow (can be gotten from Lieutenant Lech Kril on [War], Mars) and a max Quickening (do T1 Dark Sector Survival for 20 minutes for a 11.3% chance). Just follow this guide if you want a more detailed guide.

Primary Weapon (MR4)

Grab [Hek]'s Blueprint from the marketplace for 15k credits once you [Reach] MR4. There is just nothing better at the level.