Mega Billet Upper Handguard Compatibility?

[Capri_Man]

I have a mega arms billet ar15 receiver set that I will be building into a 6mm ARC with a 24" +2 barrel. I'm looking for see what handguards other people have used with the mega billet uppers. I'd definitely like to find at least a 15" maybe a 17" handguard to either come right up to the gas block or cover it. Bonus points if its a flat top but not required.

Pictures would also be greatly appreciated!

Some of the handguards I am looking at are:

BA Logic

Rise armament stinger

Geissele mk14

 

[ballisticdaddy]

Have the same setup and went with the ZEV hand guard as it closely matches the anodizing and fitment is spot on.

 

[Cascade Hemi]

I put an SLR on mine. I really like the HG but it needed some relief under the .875 ID gas block. The reason I bring it up is most 24" barrels use gas block journals larger than .750" so slim HG's may have clearance issues.

 

[Capri_Man]

I put an SLR on mine. I really like the HG but it needed some relief under the .875 ID gas block. The reason I bring it up is most 24" barrels use gas block journals larger than .750" so slim HG's may have clearance issues.

The SLR ion ultra lite is an interesting unit. Your right I did spec out a .875 gas block, and thats why I am pretty sure that if I go with a slim handguard that it will need to stop just before the gas block.

 

[Molon]

Have the same setup and went with the ZEV hand guard as it closely matches the anodizing and fitment is spot on.

The ZEV wedge-lock handguard has one of the best lock-up systems on the market.


ZEV 14 5/8” Wedge Lock Handguard


When I first picked-up the ZEV handguard, I immediately noticed the distinctive color and smooth and lustrous finish. The ZEV handguard has a velvety, luxurious look that feels so good in the hand. The ZEV handguard is sure to stand out on the firing line.

The US patent for the wedge lock mechanism employed in the ZEV Wedge Lock Handguard states that it was invented by Michael Miller and James Reid. The patent was originally granted to Mega Arms and has more recently been transferred to ZEV Technologies.

The wedge lock mechanism that secures the ZEV M-LOK handguard to the ZEV barrel nut is a simple, yet elegant approach to fastening a handguard to an upper receiver. Speaking of the barrel nut, the ZEV barrel nut is a hefty 3.6 ounces of finely machined stainless steel. The ZEV handguard comes with a custom barrel nut wrench.

The ZEV wedge lock assembly sits in a bottom lip of the ZEV handguard. The slim design of the wedge lock assembly allows for a sleek, streamlined handguard profile when compared to some of the more bulbous designs on the market.

The wedge lock assembly consists of a top wedge and a bottom wedge with a Torx bolt sandwiched in between them.

The top of the top wedge has a concave shape that perfectly matches the curvature of the barrel nut. The top wedge and the bottom wedge are mated at an angle such that when the Torx bolt is tightened, the top wedge is pulled rearward and upward wedging itself between the barrel nut and the bottom wedge and handguard forming an extremely solid lock-up.


The top wedge prior to being tightened . . .

. . . and after being tightened . . .

The ZEV Wedge Lock handguard used for this build is the 14 5/8” version and it’s manufactured from 6061 aluminum. The handguard, barrel nut and mounting hardware have a combined weight of 15.5 ounces.

The ZEV handguard has an indexing/anti-rotation pin at the 12 o’clock position. The hole in the ZEV handguard has an interference fit with the anti-rotation pin and mates precisely with the anti-rotation hole in the SOLGW upper receiver. The ZEV handguard also employs two anti-movement set screws at approximately the 04:00 and 07:00 positions.

The installed ZEV Wedge Lock handguard had zero degrees of rotation referenced to the picatinny rail of the upper receiver.

When selecting a gas-block to use with an M-LOK hand-guard, you’ll want to pay particular attention to the inside diameter of the hand-guard and the outside dimensions of the gas block. You don’t want to make the amateur mistake of installing a MK12 gas block under an M-LOK hand-guard that doesn’t have appropriate clearance for that gas-block. For this build, I used a V Seven Weapons Systems 17-4 PH stainless steel, set-screw, low-profile gas-block with an IonBond finish.

......

 

[stevieb92]

I've used SLR and Zev (Mega) wedge lock with success.

 

[camocorvette]

The mega or zev is my favorite.

 

[Capri_Man]

That's great info on the mega/zev handguards! They will be my fallback, but I'm just not particularly fond of the styling.

On the way home today I remembered that I have a shorty Balistic advantage logic rail in the cabinet. So I dug it out, spun the barrel nut on and..... damn it!

As you can see because the rail tucks in at the receiver it won't mate up to the billet upper. If someone was real brave and had that section cut off the rail it might work but I'm not gonna risk it.

 

[padom]

Have a bunch of MEGA sets with SLR handguards.

 

[Capri_Man]

Have a bunch of MEGA sets with SLR handguards.

I'd love to see some of them especially if you're running heavy barrels.

 

[Cascade Hemi]

Does it need to be aluminum? Faxon makes a really nice 17" carbon fiber handguard. I have the 13" version. Lancer makes a nice CF handguard too.

Faxon Streamline Carbon Fiber 17" M-LOK Handguard

Faxon Streamline Carbon Fiber 17" M-LOK Handguard | Rifles, Pistols, Rifle barrels, AR-15 parts, Pistol Parts | faxonfirearms.com

faxonfirearms.com

 

[Capri_Man]

Does it need to be aluminum? Faxon makes a really nice 17" carbon fiber handguard. I have the 13" version. Lancer makes a nice CF handguard too.

Faxon Streamline Carbon Fiber 17" M-LOK Handguard

Faxon Streamline Carbon Fiber 17" M-LOK Handguard | Rifles, Pistols, Rifle barrels, AR-15 parts, Pistol Parts | faxonfirearms.com

faxonfirearms.com

I was leaning towards aluminum for perceived durability and lower cost, but that faxon carbon unit is tempting.

 

[padom]

Have a bunch of MEGA sets with SLR handguards.

Yea I'll snap some pics and post them up...

I'm also a huge BCM MCMR fan. Have a few of them as well

 

[Capri_Man]

Yea I'll snap some pics and post them up...

I'm also a huge BCM MCMR fan. Have a few of them as well

Figured I should bump this up, I'd still love to see those.

 

[yuppie]

My Geissele MK16 doesn't fit my GTR-3H upper:

Emailed ZEV, got this response:

Update for Case 28730 - "GTR-3H Upper is not MilSpec?"

Good afternoon,

That is correct. Our MEGA GTR-3H Billet upper has a different Hex shape with flats instead of the smaller rounded profile of a MIL-SPEC upper.

Please let us know if you have any other questions.

Regards,

ZEV CS Team

I think I'll need to take a dremel to the upper to get it to fit.

 

[Capri_Man]

Ya that's one of the reasons I went with the WOA handguard. It can be done, but it's gonna take some work.

Incase anyone in the future finds this thread the WOA 14.6" TR handguard fits the mega upper and clears the +2 Gas system.

 

[DirtDart]

Seekins sp3rv fits nice. This is prior to zev takeover

 

[atomic41]

I'm going to jump in here and ask this same question about the Maten. Any alternatives that fit it? I've got one that has the old keymod and I'm thinking about finding a keymod.

 

[DirtDart]

This is the seekins sp3

 

[yuppie]

I wonder if the BCM MCMR handguard would fit... Probably not.

 

[Cascade Hemi]

I wonder if the BCM MCMR handguard would fit... Probably not.

Yes.