The YHM wrench works fine on the Midwest Industries lock-ring also, by the way. The YHM tool can not be used with a torque wrench, and would require a very large diameter pipe to use as a cheater bar for more leverage. The RRA and Model 1 barrel nuts were likely overtorqued, the RRA in particular grossly overtorqued. The torque-spec for the barrel nut is more that 30 foot-pounds, but not more than 80 foot-pounds in order to get the hole or notch to line up properly with the hole in the upper for the gas tube.

The Model 1 Sales upper that I had taken apart before was almost as difficult to disassemble. When I got a new wrench back from PRI, it took a 3 foot length of pipe over my breaker bar before I finally got the barrel nut to come loose with a crack. I broke pins off my PRI barrel wrench trying to get the RRA upper apart ( related post, PRI barrel nut wrench).

I would not count on using the YHM wrench to disassemble your upper, as you can’t apply much torque with it, although it may be enough to install the new barrel nut. The YHM wrench has a spanner for the lock-ring at one end, and a barrel wrench at the other end. We now offer a Cerakoting service for several of our popular handguards.Along with the handguard, I ordered the YHM wrench. These rifle mods can all be performed without the need for a gunsmith, expensive tools or complicated instructions. Our Quad Rails allow you to add flashlights, lasers, grips, optics, sling attachment points and backup sights. The modular quality of KMod accessorizes your AR15 rifle to suit your preferences, which may change over time, but our supply of handguards and rails allows you to change out parts depending on your firing needs. Regardless of whether you're going for a classic look or military or tactical function and appearance, our full line of rail attachments and AR15 rails enable rifle owners to construct a rifle for heat resistance, home defense, competitive firing or hunting. We carry the top brands to modify and personalize your rifle including Picatinny Quad Rail, BCM KMR, M Lok Handguard and universal KeyMod rail accessories. AR handguards and AR handrails for sale are among the most changeable and customizable accessories for your AR15 lightweight semiautomatic rifle.

Yhm quad rail handguard