GunTec USA Dual 5.56/.308 Upper Receiver Aluminum Vise Block

Manufactured by Guntec USA
Manufactured by Guntec USA
11 Reviews
$25.46 $29.95

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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Guntec USA has been designing, manufacturing, and distributing tactical weapon accessories since 1989. Their goal is to supply excellent quality, at an economical value to professionals and enthusiasts alike.

The Dual AR 5.56/.308 Upper Receiver Aluminum Vise Block is a versatile tool that can hold any AR pattern upper, large frame or small, securely in your bench vise. Highly effective for the efficient installation of barrels or free floating handguards.

  • T6 aluminum
  • Fits 5.56 and .308 upper receivers
  • Bench vise compatible 
  • Works with BCG and charging handle installed or not
  • Upper locks into position with two pins
  • Anodized finish
  • Lightweight
  • Extremely durable
  • Tight fit
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BrandGuntec USA
TypeVise Block

Ratings & Reviews

11 reviews

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One Small Step For Man........

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I can't afford a $100 torque rod and have been using a hinged Brownells clam-shell upper receiver clamp for years but this item changes everything. Simple, easy to use, compact and affordable. I don't know how I managed without it don't have to tilt it radically to keep it from disengaging from the receiver.


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Rocks used this to build an Ar 10 didn't even have to remove my scope to install another barrel.

my go to tool for uppers now

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used to use a claim shell in my vise. This is sooooo much better.
Makes all upper work much easier.

Not for PSA AR10

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Great for ar15's......but tried on PSA AR10 and did not fit. Still a great product, just keep in mind ar10's are not standard size and fit

high utility quality product

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Great product, stable even when using a clamp on vice to hold it. Put three upper receivers together in no time flat. Took the forward assist roll pin pounding without any movement. Barrel nut and alignment easy. You put the block's single port end at the barrel end. Used it as an anvil for pounding in the gas block roll pin. Took barrel 30 to 50 ft-lbs torque and the flash hider crush washer torques without any sign of instability. Good stuff. Push pins a little stiff at first but later easy and strong. Haven't tried it on my Aero Precision M5 uppers yet but should work they are DPMS type I format.

Great Block

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Works great for my AR-15's and is more affordable than the others out there, what's not to love about this?

Giant Leap !

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While I won't agree that this product is as significant as the lunar landing, I will say it is one giant leap for gunsmithing. I will NEVER use a clam tool again, except maybe for a door stop. Far better than the clam !



Worked great on my aero m5 upper. Very sturdy and strong. Haven't tried with any a of my 15s but see no reason it wouldn't work

Fits LR-308

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It fits the LR-308 and the smaller AR-15 variants.

great product

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It works great for the price