What Type of AR Upper Receiver Fixture for a Vice?

calicojack · Aug 25, 2019

I was reading this article (NRA) about AR barrel installation:

https://www.shootingillustrated.com...wsletter&utm_medium=insider&utm_campaign=0819

The guy is using a block that attaches to the receiver pins. Someone made a comment on the article; words to the effect that such a fixture holder would stress those upper pin holes. Considering some barrels are over torqued, I think the commentor has a good point if you are removing an existing barrel to install a new hand guard.

The other two type of fixtures I am aware of are a reaction rod and a clam shell type. What do you guys recommend?

teratos · Aug 25, 2019

I use a reaction rod.

dist1646 · Aug 25, 2019

calicojack said:
I was reading this article (NRA) about AR barrel installation:

https://www.shootingillustrated.com...wsletter&utm_medium=insider&utm_campaign=0819

The guy is using a block that attaches to the receiver pins. Someone made a comment on the article; words to the effect that such a fixture holder would stress those upper pin holes. Considering some barrels are over torqued, I think the commentor has a good point if you are removing an existing barrel to install a new hand guard.

The other two type of fixtures I am aware of are a reaction rod and a clam shell type. What do you guys recommend?

The author writes a lot of books.... :innocent0

3paul10 · Aug 25, 2019

That "upper receiver fuxture" puts way too much stress on the aluminum of the upper, very bad idea.

calicojack · Aug 25, 2019

This is interesting (although pricey):

https://www.brownells.com/guntech/quick-tip-the-device/detail.htm?lid=17622

INMY01TA · Aug 25, 2019

I use one of these:

https://ads.midwayusa.com/product/1007359056?pid=210021

clandestine · Aug 25, 2019

The best is the Midwest URR.

The one in the article is one of the worst you can use. It can shear off the pivot pins, egg them out, and I'm some cases twist the upper.

babalou · Aug 25, 2019

The Geissele has a reaction rod that is designed to fit in a vise Little more expensive.

rouchna · Aug 25, 2019

If I didn’t already have and use a Magpul BEV Block, I would go with the Midwest Industries URR.
I like the BEV Block because I can use it on both the upper and lower.

rbird7282 · Aug 25, 2019

I use the Magpul BevBlock

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DaemonAssassin · Aug 26, 2019

The only time I use that kind of a vice block is when I'm lapping a upper or mounting a optic.. Otherwise I am using a BEV Block

jrumann59 · Aug 29, 2019

clandestine said:
The best is the Midwest URR.

The one in the article is one of the worst you can use. It can shear off the pivot pins, egg them out, and I'm some cases twist the upper.

I brokedown and got one and it is worth it. I like magpul and I am sure the bev block has its purpose but the mix of plastic and metal makes me nervous. Midwest URR is long enough you can pretty much put the upper at any angle needed and you vice does not need to be in the perfect position on your bench.

C&RTactical · Aug 29, 2019

rbird7282 said:
I use the Magpul BevBlock

Sent from my iPhone using Tapatalk

I too also use the Magpul BevBlock.

What Type of AR Upper Receiver Fixture for a Vice?

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