Are Lightweight Builds the Pinnacle?

[ST911]

I see it plastered all over the internet, Facebook, guys my own age (just turned 26) -that lightweight builds are better.

Silly statement without further identifying at what, for what, for whom.

Lightweight AR's cost more money to build

Huh?

most of the builds require lightweight barrels and most of these barrels heat up quickly and when they do out goes the accuracy.

Needs to be quantified. Needs a capable shooter to quantify it.

No. They are not necessarily better. In fact, the ar15s that people are trying to build super light are probably significantly worse. I saw one the other day that was like 4 lbs. I want to see that thing put through a torture test. Throw it around, throw it in the mud, sand, water, etc., and then see how great it is. Light weight is good, but not at the expense of reliability.

What about the guns weight affected it's functional reliability?

If you want a lightweight carbine it's pretty easy.

Buy a 6920. Do nothing. The end.

I like you. Shoot my ammo.

[jpmuscle]

If you want a lightweight carbine it's pretty easy.

Buy a 6920. Do nothing. The end.

You say this but for some reason I doubt you follow your own advice.


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[Diamondback]

Bear in mind, this is an FNG take, but... depends on intended role, but a big +1 on balance being more important--I personally like things slightly muzzle heavy but not excessively so, which on a free-float 16" means needing a heavy stock plus additional ballast and thus higher overall weight. (Unloaded, my 16" FF actually weighs as much as two mil-issue M4s straight from FN including bayo, cleaning kit and shipping case. Maybe a little excessive, but... the only things on it that're cosmetic rather than functional are the Keymod covers, the Rustoleum OD paint on them and the dash of trans-red paint on the lower's engraving.)

[jekbrown]

Even if you don't want an ultra-light, you should be glad that us ultralight builders are "out there". A lot of high end / cutting edge development (Ti parts, crazy light handguards etc.) has been the result of demand from 3 gunners and the ultralight crowd. I just finished a DMR build that is pretty 'normal' in the receiver / stock area, but has several lightweight parts up front that help make the gun easier to low-ready / aim longer without as much fatigue and with faster transitions...so it's not like light parts are only beneficial for the guys building sub-4lb guns.

If you care about weight specs at all, the best resource around for selecting parts is the AR 15 Parts Weights Database (PWD). Link...

https://docs.google.com/spreadsheets...it?usp=sharing

[1168]

For me, lightweight would mean BCM Kino upper with auto BCG on a regular good brand forged lower assembly. CAR stock and magpul handguard. Fixed irons. If I were rolling my own instead, I might consider a BA Hanson 13.7 with a Mega hanguard and a no forward assist forged upper. Any lighter than those just doesn’t appeal to me.

Outlander is onto something about the plain 6920. Its amazing how light a plain M4 gets when you remove the Elcan, LA-5, rail covers, and flashlight. And eff a suppressor on a 14.5 in barrel.

[cd228]

If you want a lightweight carbine it's pretty easy.

Buy a 6920. Do nothing. The end.

I think you just won the internet for the day.

[cd228]

IMHO the Pinnacle is an intelligently designed functional rifle that meets the users actual requirements. Meaning the builder thinks through what they want and need and don't just fling parts at it because they look cool or their internet friends tell them to. For example, Lets say you had a requirement for a long rang bench gun. You don't put a 11.5" pencil barrel upper with an aim point micro on it and expect to win matches. You work through the different barrel types and build for max accuracy. Flipping the coin, you don't see many 20" HBARs with 3-15 or 5-20 scopes on entry teams.

[Kain]

If you want a lightweight carbine it's pretty easy.

Buy a 6920. Do nothing. The end.

I will see your 6920 and raise you a 6720.

[hk_shootr]

There is no free lunch.

[justin_247]

I will see your 6920 and raise you a 6720.

There we go.

I really, really wish I had purchased a rifle with a LW-profile barrel when I was first starting out. I still have yet to make the leap, but it's high on my priority list. The 6720s I've handled are very nice to wield.