My first AR - sorta

[greentick]

I assume you guys are talking about the 6.8spc that Remington botched the chamber on which resulted in them loading an anemic cartridge to prevent overpressure.

The current chambering is described as SPC2 and is much more capable. There are several magazine manufacturers with reliable feeding offerings (ASC, PRI, Cproducts Defense (CPD), and D&H). The PRI and newer ASC and CPD mags let you load to 2.300+ on the round COAL.

The round itself has offerings from 85gr to a 140gr offering by SSA using Berger VLD that is still supersonic at 1000m from a 16" barrel (http://www.ssarmory.com/6.8_spc_ammo...LD_Berger.aspx). It is being used on deer and hog, (recent thread on 68forums http://68forums.com/forums/showthrea...ats-for-Dinner) fairly analogous to us bipeds, other than not shooting back, with good effect.

If you are wanting to run suppressed Bison Armory offers a barrel/220gr bullet combo that would meet that criteria, while providing supersonic performance that is better than the 300blackout. (http://bisonarmory.com/11-5-recon-su...spc-stainless/)

I had considered doing a 300BO upper because of being able to run it suppressed but opted not to. If you are doing CQB or brush hunting at short range it seems to be fine. At midranges it seems to suffer. I don't have the money to buy one to just to see, I have to try to carefully sift the BS out of reviews. Anyhow, Savage dropped it due to lack of accuracy (http://www.thetruthaboutguns.com/201...300-blk-rifle/).

I do have a 6.8, have for years. I have not shot it extensively due to budget/time/range restrictions. I do reload and have accumulated enough brass to play with/ focus more on the 6.8. Don't take this post as me hating on the 300BO. It just doesn't do anything vastly better that I can't do with the 6.8. I would have loved to make the BO work as I already reload .223, and a few .30 calibers; already have all the components. Just didn't work out.

[MR2]

Narrowing in on what I think I want. 18 month long project. Staying withing the legal framework and minimizing need for tax stamps:

Looking at three ARs - pistole, carbine, and long rifle.

A single .30 suppressor for all three. Leaning towards Surefire.

Personal build AR pistol in 300BLK, gas operated. Along the lines of: https://www.mmcarmory.com/product-ca...uarter-pistol/ Nice buffer assembly!
Still trying to figure optimal barrel length. 9+" for the 300BLK which is good as a sorta PDW, a bit long for a concealable. Doable with a 10rnd mag and Folding Pistol Grip.
Are single point slings permitted with pistols?

Personal build AR carbine in 300BLK, piston operated, 16" barrel. Along the lines of https://danieldefense.com/daniel-def...no-sights.html (I know the link is to a gas upper).
Any advice on a lightweight hand guards? Not intending to load this up - just an angle fore grip and a barrel light.

Personal build AR rifle in 7.62x51, gas operated, 20+" barrel. 4x12 40+mm scope. Not intending to drive tacks at distance, just a little 'rough framing'.

Thank you all for your sage advice and instructional comments. Please continue.

[greentick]

I'm digging that grip. I'm building a 6.8 pistol that I may SBR in the future when I dig out of debt.

Vertical fore grips are out but the magpul afg is ok for a pistol if you want something up front.

Sounds like a good plan. Be careful of developing BRD. Everytime I start accumulating spare parts they seem to grow into another project.

[The Reaper]

Originally Posted by MR2

Narrowing in on what I think I want. 18 month long project. Staying withing the legal framework and minimizing need for tax stamps:

Looking at three ARs - pistole, carbine, and long rifle.

A single .30 suppressor for all three. Leaning towards Surefire.

Personal build AR pistol in 300BLK, gas operated. Along the lines of: https://www.mmcarmory.com/product-ca...uarter-pistol/ Nice buffer assembly!
Still trying to figure optimal barrel length. 9+" for the 300BLK which is good as a sorta PDW, a bit long for a concealable. Doable with a 10rnd mag and Folding Pistol Grip.
Are single point slings permitted with pistols?

Personal build AR carbine in 300BLK, piston operated, 16" barrel. Along the lines of https://danieldefense.com/daniel-def...no-sights.html (I know the link is to a gas upper).
Any advice on a lightweight hand guards? Not intending to load this up - just an angle fore grip and a barrel light.

Personal build AR rifle in 7.62x51, gas operated, 20+" barrel. 4x12 40+mm scope. Not intending to drive tacks at distance, just a little 'rough framing'.

Thank you all for your sage advice and instructional comments. Please continue.

The current heat in lightweight handguards appears to be the Geissele MK 4. I love mine.

HTH.

TR

[Iraqgunz]

Both of those ARbortions from MMC armory are overpriced. I have built SPR rifles for much less and several SBR's for less than that with quality parts.

The .300 BO in a 16" barrel also makes very little sense. The round is still difficult to locate and at least a 1.00 a round. It was designed and optimized for use in SBR lengths like 8"-10" inches. The muzzle velocity drop off is not the same in .300 like it is with the 5.56 round. You should stick with a solid 5.56 rifle/carbine and then add an additional upper as time and funds permit.

You can also register the lower as an SBR on a Form 1 and use the e-File system. You can then use the same 16" upper on that lower and rotate them as needed.

Originally Posted by MR2

Narrowing in on what I think I want. 18 month long project. Staying withing the legal framework and minimizing need for tax stamps:

Looking at three ARs - pistole, carbine, and long rifle.

A single .30 suppressor for all three. Leaning towards Surefire.

Personal build AR pistol in 300BLK, gas operated. Along the lines of: https://www.mmcarmory.com/product-ca...uarter-pistol/ Nice buffer assembly!
Still trying to figure optimal barrel length. 9+" for the 300BLK which is good as a sorta PDW, a bit long for a concealable. Doable with a 10rnd mag and Folding Pistol Grip.
Are single point slings permitted with pistols?

Personal build AR carbine in 300BLK, piston operated, 16" barrel. Along the lines of https://danieldefense.com/daniel-def...no-sights.html (I know the link is to a gas upper).
Any advice on a lightweight hand guards? Not intending to load this up - just an angle fore grip and a barrel light.

Personal build AR rifle in 7.62x51, gas operated, 20+" barrel. 4x12 40+mm scope. Not intending to drive tacks at distance, just a little 'rough framing'.

Thank you all for your sage advice and instructional comments. Please continue.

[TacOfficer]

Originally Posted by The Reaper

The current heat in lightweight handguards appears to be the Geissele MK 4. I love mine.

HTH.

TR

Resurrecting the dead, because it was mentioned here.
I'm currently shopping a new hand guard for my duty carbine to lighten the load. Currently I have a mid length 16" with a DD Lite quad rail, flashlight and a FSB.
The Geiseele MK 4 caught my eye .

I would expect to get a low gas block if I went with the geissele and the length would be around 12-13 inches.

I also have concerns regarding suitability for work. Are these new hand guards durable/reliable and would they raise eyebrows if they need to employ it arises and my weapon comes into question?

Questions, comments and critisms are welcome and expected.

[Peregrino]

Originally Posted by TacOfficer

Resurrecting the dead, because it was mentioned here.
I'm currently shopping a new hand guard for my duty carbine to lighten the load. Currently I have a mid length 16" with a DD Lite quad rail, flashlight and a FSB.
The Geiseele MK 4 caught my eye .

I would expect to get a low gas block if I went with the geissele and the length would be around 12-13 inches.

I also have concerns regarding suitability for work. Are these new hand guards durable/reliable and would they raise eyebrows if they need to employ it arises and my weapon comes into question?

Questions, comments and critisms are welcome and expected.

I have several Geissele Mk 4 and Mk 8 M-Locks in 13" and 15" lengths. I'm currently using the 15" one on a rifle purpose built for 3-gun competition. If you've ever played or watched that "game", you're familiar with the cringe worthy abuse the rifle takes getting thrown around and banging into "stuff". The only other hand-guard I would consider at the moment might be Bravo Company's KMR (in spite of my ambivalence about the keymod accessory system). The Geisseles are robust, come packaged with the gas block and tools to install, and fit my meat-hooks; the BC is lighter and slimmer, nice for a stripped down go-fast gun. Both allow placement of accessory rails where needed (unlike other quad-rail hand-guards I have that can substitute nicely for cheese graters). Judicious shopping can find deals, especially on the Geisseles that make them price competitive with anything out there. My .02, YMMV.

[TacOfficer]

Peregrino,

Thank you for the reply. For me,t hat settles the question of durability.

For a 16" barrel is the difference between your 13" and 15" a matter of personal preference or is there a practical reason? I do like the "look" of the 15" on a 16" barrel, but "tacti-cool" is not a consideration for me.

I'll eventually have a cool gun for the safe, for now I'm just upgrading a light duty gun (with out the cheese graters).

Thanks again
TO

[Peregrino]

I went with 13/16 and 15/18. I grew up in the era when MP5s and MP5Ks were considered sexy. Given a rare instance of actually learning from another's f-up, I don't like getting my fingers too close to a muzzle. That and at some point I might want to swap the MB for a suppressor adapter. Since I use a SureFire, I need the extra barrel exposure for the telescoped portion. Again - YMMV.

[TacOfficer]

Originally Posted by Peregrino

I went with 13/16 and 15/18. I grew up in the era when MP5s and MP5Ks were considered sexy. Given a rare instance of actually learning from another's f-up, I don't like getting my fingers too close to a muzzle. That and at some point I might want to swap the MB for a suppressor adapter. Since I use a SureFire, I need the extra barrel exposure for the telescoped portion. Again - YMMV.

As dumb as I am about to sound, I must admit, I have never considered the issue of getting ones fingers too close to the muzzle while firing the weapon. I've always had an FSB, so it didn't cross my mind.

Vis-a-vis the MB, our department is considering approving suppressors (I cannot even fathom why THEY will let us, I know why I would want one), so having the option for a SF suppressor is really appealing to me. I will have to do some homework here and elsewhere on the physical considerations of a can.

You are the man,