Installing a spiffy new handguard for your AR-15 used to be a somewhat complicated process, requiring special tools that almost no casual shooters have. No more. The folks at Brownells have released the new Wrenchman series of AR handguards. What’s the big deal? All you need to install a spiffy new M-LOK attachment points is a crescent wrench. So, yes, the product name is descriptive of its function.

I should note that if you’re breathing new life into an existing rifle, you may need to beg, borrow, or steal the use of a barrel nut tool to get the old parts off. If you’re assembling your own AR from parts, you’re good to go with that standard crescent wrench, at least for the handguard portion of your build.

I tested out the Wrenchman by doing some cosmetic (and functional) surgery to an old Rock River Arms LAR 6.8 back that I purchased back in 1865. Or maybe sometime before 2010

I’ve been using the Federal Air Marshal qualification course of fire as a fun and challenging training aid. This routine isn’t easy—only a small percentage of concealed carriers will pass it without serious practice.

What makes it a great training tool is that it requires absolute and legit concealment. I’m not talking BS concealment like a floppy shoot-me-first vest or an IDPA barely competition-legal setup.

The litmus test is clear. Could you walk onto an airplane, like an Air Marshal has to do, and suffer all the crammed seating contortions, with a zero percent chance of someone spotting your concealed handgun? In other words, to run the course fair, you have do it from legit, no cheating concealment.