Advice is needed

bmorewineguy · Jan 29, 2015

I have built both and can say that it is very fun to build them yourself. I understand that not having the tools is difficult. You can use most tools you will need for both platforms but will need to buy vise blocks for each. They will not interchange.

I went 18" barrel for my 308 build and would advise a nice muzzle brake, it will cut down on the recoil. The difference between my Remington bolt action and the AR308 with the brake is like night and day.

If you decide to go pre built you really don't have much to worry about though, just a scope and lower parts. You can find lower parts kits most places with fire control group or without. If you want a good trigger you can get one of the Geissele triggers on the low end and a lower parts kit without the trigger.

A good budget scope for it and what I went with is a Primary Arms. See the link. It's not expensive but pretty nice.
https://www.primaryarms.com/Primary_Arms_4_14X44_FFP_Scope_with_308_p/pa4-14xffp308.htm

jti424 · Jan 29, 2015

DaemonAssassin said:
Why not build an upper for 300BLK? It uses the 223/556 lower and all the same parts as a 223/556 AR, except for the barrel. I just built a 300BLK upper for about 600.

I was honestly uneducated about the 300blk.. I've heard good reviews but never did research.

I just don't know if I wanna buy yet another ammo. But its a thought as of now

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DaemonAssassin · Jan 29, 2015

jti424 said:
I was honestly uneducated about the 300blk.. I've heard good reviews but never did research.

I just don't know if I wanna buy yet another ammo. But its a thought as of now

Sent from my iPhone using Tapatalk

Buy ammo? Don't you reload?

I converted about 300 cases of LC 556 brass over to 300BLK. I have Lil' Gun and W296 for powder. I'm going to run Hornady 110gr VMax or Hornady 125gr SST's.

I decided to build a lightweight deer rifle and I managed to bring it in at 6.1 pounds, without an optic. It is an interesting caliber. Once I get the optic and my lower finish, we might be able to meet up so you can check it out. The perceived recoil is less than a 223/556 IMO.

The lower is not mine, it was loaned to me for the pic and test firing, by the guy that helped (he did most of the work) put the upper together.

DaemonAssassin · Jan 29, 2015

The barrel I have isn't offered anywhere anymore, so I'm giving you my other option. I managed to get an AAC barrel w/pistol length gas system and 1:7 twist, during Thanksgiving for 129 shipped.

http://ballisticadvantagellc.com/?product=300-blackout-16-modern

Rail.

http://www.strikeindustries.com/sho...r-mega-fins-key-mod-handguard-rail-g2-12.html

Flash hider.

http://www.brownells.com/rifle-part...9.aspx?avs|Caliber_1=AAK_30 Caliber (xzzx308)

Charging Handle.

http://axtsweapons.com/products/raptor-556

Upper laser etched for the caliber you want (it has the forward assist and dust cover installed)

http://www.shop.ar15hardware.com/product.sc?productId=236&categoryId=2

Bolt Carrier Group (a friend/member on here sold it to me)

http://shopwilsoncombat.com/Bolt-Carrier-Assembly-556-NATO/productinfo/TR-BCA/

I'm planning on getting a Vortex Crossfire II 3-9x40mm rifle scope and a Burris P.E.P.R. scope mount.

The lower is an Adcor B.E.A.R. lower. I'm getting a Geisslle G2S trigger, a standard LPK, Spike's buffer tube kit, Magpul ASAP endplate, Magpul rail sling mount, and a Magpul CTR stock.

jti424 · Jan 29, 2015

DaemonAssassin said:
Buy ammo? Don't you reload?

I converted about 300 cases of LC 556 brass over to 300BLK. I have Lil' Gun and W296 for powder. I'm going to run Hornady 110gr VMax or Hornady 125gr SST's.

I decided to build a lightweight deer rifle and I managed to bring it in at 6.1 pounds, without an optic. It is an interesting caliber. Once I get the optic and my lower finish, we might be able to meet up so you can check it out. The perceived recoil is less than a 223/556 IMO.

The lower is not mine, it was loaned to me for the pic and test firing, by the guy that helped (he did most of the work) put the upper together.

Since I mainly shoot 223 I don't see the need to reload as it's only costing me .27 cents a round. One day I might take on reloading.

Good looking rifle. Do you like the 300 more than the 556?

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jti424 · Jan 29, 2015

DaemonAssassin said:
The barrel I have isn't offered anywhere anymore, so I'm giving you my other option. I managed to get an AAC barrel w/pistol length gas system and 1:7 twist, during Thanksgiving for 129 shipped.

http://ballisticadvantagellc.com/?product=300-blackout-16-modern

Rail.

http://www.strikeindustries.com/sho...r-mega-fins-key-mod-handguard-rail-g2-12.html

Flash hider.

http://www.brownells.com/rifle-part...9.aspx?avs|Caliber_1=AAK_30 Caliber (xzzx308)

Charging Handle.

http://axtsweapons.com/products/raptor-556

Upper laser etched for the caliber you want (it has the forward assist and dust cover installed)

http://www.shop.ar15hardware.com/product.sc?productId=236&categoryId=2

Bolt Carrier Group (a friend/member on here sold it to me)

http://shopwilsoncombat.com/Bolt-Carrier-Assembly-556-NATO/productinfo/TR-BCA/

I'm planning on getting a Vortex Crossfire II 3-9x40mm rifle scope and a Burris P.E.P.R. scope mount.

The lower is an Adcor B.E.A.R. lower. I'm getting a Geisslle G2S trigger, a standard LPK, Spike's buffer tube kit, Magpul ASAP endplate, Magpul rail sling mount, and a Magpul CTR stock.

Thanks for the breakdown!

I just came across the AAS budget pistol upper and lpk for $480... That would be $550 complete for an 556 pistol....

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DaemonAssassin · Jan 30, 2015

jti424 said:
Since I mainly shoot 223 I don't see the need to reload as it's only costing me .27 cents a round. One day I might take on reloading.

Good looking rifle. Do you like the 300 more than the 556?

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You may want to consider reloading, due to how low your cost per round actually is when reloading. I can load ammo that rivals/beats match grade ammo for about 25+/- cpr. Look up the price for FGMM (Federal Gold Medal Match) and you will see what that costs. The kicker is that I am using non-match components for my loads for plinking. My precision loads are about 30cpr, give or take, and I use them for varmint control. But then again I built a precision AR to deal with coyotes, fox, and groundhogs in WV.

Everything has it's place. The 300 is something that has it's own place in the world. Do I like the 300 more than the 223? The answer depends on what I want to use it for. If I was to use the 300 for hunting, I would say it is better, hands down, for an ethical kill. For HD work, I could go either way.

Tell you what I'll do. Let me get an optic onto that upper, and I'll put it on my precision lower, and we'll go to the range, so I can sight it in with factory ammo and you can run a mag through it and also through my precision rifle. You can make your own decision from there, as to what you like better.

Keep in mind, that there is nothing stopping you from having multiple uppers for a single lower. I chose to go in a different direction, because I have multiple lowers and the ability to make one upper and marry it to a specific lower, for a specific application. It makes things easier to keep track of with my inventory, because I set up each lower specifically for an upper. Also, I have certain parts on certain lowers, that give one rifle and advantage over another. I have a Magpul UBR and a RRA NM 2 stage trigger on my precision rifle lower, because that is what I wanted to have on it to give me a adjustable stock and the trigger, that I wanted for that rifle. An HD rifle will have a standard telescoping stock and GI trigger. A hunting rifle will have a Magpul CTR/ACS and a 2 stage trigger. I build each lower for a specific reason. No need to deal with a GI trigger for hunting or deal with a 2 stage trigger in HD (very bad IMO).

Check this post. Mine is the 2nd from the bottom.
http://www.mdshooters.com/showpost.php?p=3247318&postcount=690

DaemonAssassin · Jan 30, 2015

jti424 said:
Thanks for the breakdown!

I just came across the AAS budget pistol upper and lpk for $480... That would be $550 complete for an 556 pistol....

Sent from my iPhone using Tapatalk

No problem on the breakdown.

The question you have to answer is if you really want to build an AR pistol, or would you like to build a rifle. Only you can answer that question, but be sure to go into that decision making process with eyes wide open.

I will be building an AR pistol eventually, because I have the stripped lowers to be able to do so, and not have to worry about it cutting into the stock. I already have the upper I want spec'ed out and am waiting for a while, before I get the upper. I need to build the lower first, so I won't get hit for constructive intent.

I also have other projects in the pipeline too. I am planning on doing an AR10 build, for deer hunting, just to be able to say I build an AR10. I also want to re-stock my 700 and add DBM to it.

outrider58 · Jan 30, 2015

Remember, legally speaking, once an AR is built into a rifle, it can not be built into a pistol. So, start with a pistol. :shrug:

outrider58 · Jan 30, 2015

DaemonAssassin said:
Buy ammo? Don't you reload?

I converted about 300 cases of LC 556 brass over to 300BLK. I have Lil' Gun and W296 for powder. I'm going to run Hornady 110gr VMax or Hornady 125gr SST's.

I decided to build a lightweight deer rifle and I managed to bring it in at 6.1 pounds, without an optic. It is an interesting caliber. Once I get the optic and my lower finish, we might be able to meet up so you can check it out. The perceived recoil is less than a 223/556 IMO.

The lower is not mine, it was loaned to me for the pic and test firing, by the guy that helped (he did most of the work) put the upper together.

Still use small rifle primers on the 300 AAC? I'm building a pistol, might as well go 300.

DaemonAssassin · Jan 30, 2015

outrider58 said:
Still use small rifle primers on the 300 AAC? I'm building a pistol, might as well go 300.

It is essentially a 223 case that has been cut down and formed into 300.

Yes it uses SR primers.

From a rifle standpoint, it is one hell of a interesting caliber. I was shooting it at night, with some ambient light to be able to hit the target during test firing. There was very little to no muzzle flash. The recoil was very light. It isn't what I would expect from a 30 caliber cartridge.

jimbobborg · Jan 30, 2015

outrider58 said:
Remember, legally speaking, once an AR is built into a rifle, it can not be built into a pistol. So, start with a pistol.

If it starts life as a pistol, you can change it into a rifle and then back to a pistol. But you can't have it start as a rifle then try to make it a pistol. Yes, the ATF is ridiculous.

outrider58 · Jan 30, 2015

DaemonAssassin said:
It is essentially a 223 case that has been cut down and formed into 300.

Yes it uses SR primers.

From a rifle standpoint, it is one hell of a interesting caliber. I was shooting it at night, with some ambient light to be able to hit the target during test firing. There was very little to no muzzle flash. The recoil was very light. It isn't what I would expect from a 30 caliber cartridge.

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