First Timer AR-15 Build Questions

rg115

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Jul 2, 2025
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I've been thinking about building my first AR-15 for a while now, and I've finally started looking at parts. Seems like there are some solid deals out there if you know where to look, but I'll be honest — I'm still figuring out what's worth buying and what's not.

I'm planning to do a basic rifle build to start. Probably sticking with 5.56 for now, but I'm open to suggestions if folks think there's a better route for a first-timer.

Are there any parts brands you'd personally avoid? What about hidden costs or rookie mistakes I should look out for? Or should I just buy one already done?

Appreciate any advice — even just lessons you learned the hard way when you were starting out.
 
I'd start with a decent lower from Aero or Anderson, and don't cheap out on the barrel. Hidden costs? Optics, mags, and tools add up fast. I did my first build piece-by-piece, it taught me patience, but a pre-built isn't a bad move
 
I debated between building my own and buying a fairly inexpensive (name brand) basic model, and went with the S&W M&P Sport II. A few years later, I've sold the Sport, and bit the bullet and bought a very nice Daniel Defense. Buy once, cry once. But, that's just me. I'm not very "handy" with all kinds of tools, but as stated above some new tools are necessary. Whatever you decide, it's a "fun gun" to have and shoot.
 
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