Minor fitting to my lower was needed
I have a colt le6920 and this block was to big on both ends. I took a large file, and while watching football, carefully removed a little material on both sides for a nice tight fit. I know every ar maker will have slight differences in the mag well so this block being to big for my ar was no surprise. It was easy for me to fit it to my mag well and I would recommend it to anyone. Just remember that not everything will fit perfectly and in this case that's perfectly fine.
Useful tool for AR15 armorers
Does what it's intended to do. The only thing I gave it a 4 is that I have to shave a lot on the lower receiver vise block in order for it to fit on my Colt lower receiver. I had no issues with the upper vise block. I was just hoping that for the price, both blocks should fit perfectly, or they make different blocks for different receiver sizes.
Good product but it needed work.
Purchased in a pack that included upper receiver vice block. The lower block did not fit as others stated but 15-minutes with a file fixed that problem. Product now works with no problems and is still tight. You will need to work on it before using but I still say that it is a great buy.
Tight fit on Spike's lower
Works as designed, though it is an extremely tight fit on my Spike's Tactical lower. As with many of the other reviews, will have to sand down the sides.
As Stated, Needs Sanding
Just completed my first AR lower build. Spikes tactical lower, RRA LPK. As many reviewers stated, I needed to sand the vice block to get it to fit into my lower receiver. That's why I gave it 4 instead of 5. With minor sanding, it is a great product.
Very good overall
The kit came as advertised. The mag block fits tight in my billeted lower, but it serves the purpose. The upper insert worked on both my billeted and forged uppers. The vise block only worked on the mil spec forged upper and not the billeted upper. Do not get this kit expecting the upper vise block to work on a billeted upper, go another route.
Receiver vise block set
This is one of those tools you don't know how you did without. Great product on the upper receiver block set. The lower mag well block is a different story. It doesn't fit.
Does what it's supposed to do.
I've used this a handful of times since receiving it a few days ago. I used to use the "Plastix Plus" stand to do general maintenance/cleaning/lubing, but now I prefer this vise block. You'll read some reviews complaining of the block being too large for the mag well. I don't think that this is a problem or design flaw at all. Think about it--not all manufacturers will end up with lower receivers (hence mag wells) that are within design specs. I think Brownells did us consumers right by using a larger-than-spec mold. It took me a few swipes with a file to get a snug fit with my lowers (CMMG). There's no play. Just be careful and don't go overboard with sandpaper or a file.
Must have!
I found out about this set when I attended an armorers course a few years ago. It is an absolute must for the AR15/M16 armorer, and the hobbyist alike. The upper clamp will keep you from trashing your upper on those over torqued, or in some cases damaged barrel nuts. The only thing that keeps me from giving this a 5 star rating is the mag. well block is hit and miss as far as which lowers it will fit into, some fit, some don't, though luckily I don't use it as much as the upper clamp; so it's not a big deal. Overall an excellent addition to any serious AR users tool kit!
Had to tweak mine too.
I had to sand mine a little to get it to fit in the mag well of my lower. Took all of 5 minutes with some sandpaper I had lying around. Even with that slight nurgle, I found it an indispensable tool.
