But I do feel confident that a 1 1/4″ torque wrench adapter or crow’s foot would work for this application. When I tried a 1 1/4″ combination wrench, I found a bit of slop, so ideally you will find a tool that’s adjustable (and therefore will be useful for other applications as well). I typically use the AR-15 armorer’s wrench as a torque wrench adapter since that capability is built into the wrench, but this hand guard doesn’t use a typical delta ring or compatible aftermarket barrel nut- it’s a 1 1/4″ hex nut type arrangement.

The one “non-standard” tool for this Trinity Force Atlas hand guard upgrade is a 1 1/4″ torque wrench adapter of some sort. 1/8″ punch, roll pin holder set, roll pin punch set.

AR-15/M16 front sight Bench block or generic bench block and shims/supports (pictured).

Torque wrench and adapter (or crow’s foot) for 1 1/4″ barrel nut – mine is home made (see below).

Brownells AR-15 vice block set: includes upper and lower receiver vice blocks (lower vice block not shown, except in video).

If you are an AR-15 enthusiast, these are great tools to have around even after this kind of upgrade! You never know when you may need these tools.

In addition to the parts, you’ll also need some tools. Low-profile gasblock (for any handguard that covers the gas block area) – I used a Trinity Force 0.75″ low-profile gas block.Free float handguard, I used a Trinity Force Atlas 15″ Keymod handguard.And the results were GREAT! If you have an AR-15 with a fixed front sight upper, here’s the parts you’ll need to complete the upgrade:

Delton echo keymod accessories