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No. 108153
ID: 02ecb0
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>Has anyone here assembled their own upper?
between me and my buddies we have built a few.
>Any good guides to read?
youtube, and the above guides.
>Manufactures to avoid? (obviously avoid poverty pony stuff)
dpms, anderson (lowers seem fine tbqh but check one in person first, i've had a dud before) doublestar, radical...basically any manufacturer that sells a complete AR for under $500.
>Manufactures you like?
barrels: faxon, ballistic advantage, and larue. all three of these guys offer up a barrel that tapers from the receiver end to the muzzle, so it's thick where it needs to be (towards the receiver) and thin at the end towards the muzzle) to aid in weight balance, and give you some advantages of a heavy barrel. (faxon makes the gunner profile, BA makes the hanson profile, and larue makes the stealth, all sub $250 iirc.) DD and BCM make good hammer forged barrels if you would rather have that.
bolt carrier groups: toolcraft is my go-to. they are OEM for a lot of companies, and offer up one under their own name that is mil-spec (158 carpenter steel) and is nitrided, which is better than mil-spec phosphating. if you need meme coatings, cryptic is good despite their cringey marketing. bootleg makes a neat, 4-position adjustable carrier that i've had great luck with, but that does not come with a bolt or the other parts, just the carrier.
handguards: alg is good, and not too expensive, like their sister company geissele. i use a fortis rev2, which is nice because it is free-floating, and bolts right on to a mil-spec barrel nut with no hassle. other guys like centurion arms and samson make handguards like this, too.
muzzle devices: you could get away with an a2 birdcage, it costs almost nothing and works well for both flash and recoil reduction. the yhm phantom is good and cheap too. if you need something to work with a silencer, companies usually make their muzzle devices proprietary to their suppressors, but some cross over.
receivers: aero precision makes the best price-to-performance ones, bar none, so i'd have to second avgas here. they also make an awesome non-forward assist stripped upper that still allows you to mount on a dust cover for not much money either, and i've used one of those to good effect on a recent rebuild. they also make an m4e1 lower that i'm going to build up soon, and i like those a lot because no fucking roll pins, and it looks cool like a billet lower while still being forged.
triggers: alg if you need a slightly-fancier mil-spec trigger, geissele if you need top-tier performance. seconding avgas for the larue mbt, though, since right now it is $87 and is by far the best deal for a durable, great 2-stage trigger that is also durable.
charging handle: bcm gunfighters are great value for money while being bulletproof, and come in ambi if you need that feature. the radian raptor and geissele super/airborne are also awesome but are more money.
buffer: sprinco for springs, spikes for buffers. geissele also makes the super 42 which is also money, and the vltor a5 is awesome too.
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