AR Picture Thread

**Stickman** · 04-15-21, 16:19

**Spooky1** · 04-16-21, 02:13

That is a slick little Carbine, is the upper receiver a Battle Arms also?

**okie** · 04-16-21, 03:22

Originally Posted by Spooky1

That is a slick little Carbine, is the upper receiver a Battle Arms also?q+

Looks like an Vltor MUR. Very good receiver, BTW. They undersize the flange slightly for a perfect fit, requiring a deep freeze, heat gun, and mallet to install. Aluminum expands much faster than steel, so the tighter the fit the more consistent your groups will be as things warm up. They also have a monolithic style version of the MUR that's a great option for anyone wanting free float without their laser zero wandering too much. It's kind of heavy on paper, but not when you consider the rigidity that it brings to the table. For an SPR style rifle where you want aiming devices on the top rail, it's the obvious choice in my opinion.

ETA: Oh and it's forged instead of billet, so big bonus there too.

**Spooky1** · 04-16-21, 03:43

Originally Posted by okie

Looks like an Vltor MUR. Very good receiver, BTW. They undersize the flange slightly for a perfect fit, requiring a deep freeze, heat gun, and mallet to install. Aluminum expands much faster than steel, so the tighter the fit the more consistent your groups will be as things warm up. They also have a monolithic style version of the MUR that's a great option for anyone wanting free float without their laser zero wandering too much. It's kind of heavy on paper, but not when you consider the rigidity that it brings to the table. For an SPR style rifle where you want aiming devices on the top rail, it's the obvious choice in my opinion.

ETA: Oh and it's forged instead of billet, so big bonus there too.

Thank you for that information, while I am not new to AR's, I am a long way from knowing what 99.5% of what alot of y'all know. I have a Colt, 2 BCM, 2 S&W, and 2 Diamondback's so alot of the Billet stuff I am not familiar with, so it's cool it's Forged. I was however surprised with the Diamondbacks but then again I could have gotten the 2 good ones they put together. 😝

I would like to put together a precision/hunting AR in 6mm ARC, so something like that upper would probably be awesome for that.

**minuteman1636** · 04-16-21, 04:44

Colt / Knights Armament IAR6940H Prototype Upper Receiver

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**okie** · 04-16-21, 14:38

Originally Posted by minuteman1636

Colt / Knights Armament IAR6940H Prototype Upper Receiver

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What's up with the handguard? I'm guessing there's something going on down there.

**okie** · 04-16-21, 14:38

Originally Posted by minuteman1636

Colt / Knights Armament IAR6940H Prototype Upper Receiver

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What's up with the handguard? I'm guessing there's something going on down there.

**minuteman1636** · 04-16-21, 18:05

The handguard is called 'Heat Rail System' and was designed by Knights Armament. It functions as a heat sink and pulls heat away from the barrel and is supposed to dissipate it faster than traditional barrel cooling.

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