Question for you AR Guys

[AirForceAngler]

I have built 3 different ARs, all in 5.56/.223, a couple in carbine length and one in mid length, all 16" barrels. I still have a stripped lower in the cabinet and am thinking about doing something different. Maybe 5.56/.223 in a 20" barrel or even a 300 Blackout. Not sure. What all calibers can be built on a standard lower?

The other guns I build were all fairly inexpensive with parts from PSA and shoot great but thinking a long distance gun could be cool, too. I've seen some videos of someone shooting coyotes with an FLIR scope and may do that if I can scratch up the dough.

[adchunts]

As far as calibers, there are a bunch! Some off the top of my head:

.204 Ruger
.300 Blk
.300 HAM’R
6.5 Grendel
6.8 SPC
.22 Nosler
.224 Valkyrie
.350 Legend
.375 SOCOM
.450 Bushmaster
.50 Beowulf
7.62 x 39

I know people with these calibers in AR-15 platforms. Tons more out there. What do you want to do with this new rifle?

[tdt91]

I would build an M16A1 profile as that's what I had back in the days of my Army life. Just like the 20'' barrel and triangle shape grips for nostalgic purposes.

[ss]

300 blackout pistol, 8 inch barrel.

[clayrhye]

I really enjoy a good pistol build. I like 10.5" barrels, had good luck with Aero Precision parts for upper and lower, and the SB tactical SBA3 pistol brace. Throw a good trigger in it, and they are surprisingly fun to shoot at distance (200 yards or so) with a decent optic.

I also have experience with 20" barrel variants and they are a ton of fun in their own right. I cant say which way you should go, but if you don't own an AR pistol / sbr type rig, you should give it a try!

[Transom]

I really enjoy a good pistol build. I like 10.5" barrels, had good luck with Aero Precision parts for upper and lower, and the SB tactical SBA3 pistol brace. Throw a good trigger in it, and they are surprisingly fun to shoot at distance (200 yards or so) with a decent optic.

I also have experience with 20" barrel variants and they are a ton of fun in their own right. I cant say which way you should go, but if you don't own an AR pistol / sbr type rig, you should give it a try!

I am the opposite. I see no use for an ar pistol. In a rifle caliber the short barrel kills the performance and if it is a pistol practical accuracy will suffer. A short barrel is practical if we are talking 9mm and the like though I will never go through the hassle to have a SBR.

[AirForceAngler]

I would build an M16A1 profile as that's what I had back in the days of my Army life. Just like the 20'' barrel and triangle shape grips for nostalgic purposes.

I built one like that for my dad a few years ago for his birthday. He's a Viet Nam vet and he really likes it. Only thing it doesn't have is the triangle shaped fore-stock. It was round but he changed it for a rail stock anyhow. He also wishes the safety had another detente in it.

[AirForceAngler]

I'm looking to do another rifle build. Probably a 20" or more barrel. Probably going to use it for coyotes and hogs.

[ss]

I'm looking to do another rifle build. Probably a 20" or more barrel. Probably going to use it for coyotes and hogs.

In that case, 6.5 Grendel is what you seek.

[yetti462]

6.5 Grendel is going to be my next. If you don't have a 300 black out I'd recommend it too. very fun suppressed with subs and supers.

[coreyl65]

I’ve got a 300 blackout with the 10.5 inch barrel and it’s a blast to shoot, accuracy lacks after 75 yds but that could be the shooter lol

[Team Hobbie Hut]

I'm looking to do another rifle build. Probably a 20" or more barrel. Probably going to use it for coyotes and hogs.

I had Rock River put together a custom build for me in .223 Wylde with a 20" stainless barrel and it is a tack driver.

[Arkyarcher]

I have a heavy barrel 18" in 6.5 Grendel it will reach out there, was torn between it and a 224 Valkyrie. I have a 350 legend barrel on the way just for fun for a different upper. These dang things are like adult leggos. Just guessing but the 6.5 G or 224 V would be good choices for you.

[dvl2700]

I built an upper for my AR A2. 24" SS Fluted barrel, Put a 6x20 scope on it for prairie dogs and other varments. And just fun to shoot. I also have a A-4 lower that I purchased a 300 blackout upper for. Next will be a 350 legend for deer hunting.

[old373guy]

I would build an M16A1 profile as that's what I had back in the days of my Army life. Just like the 20'' barrel and triangle shape grips for nostalgic purposes.

I put a replica M16A1 together last year, minus the select fire function of course. All the retro furniture parts are available as is a tri prong flash hider. I used a one piece upper with the carry handle sights, I really like the old style look of it.