No, the ID of the handguard is 1.375 as well. And even if there was a small amount of room you would still have to account for flexing, so keep that in mind as well.
Inside diameter is 1.375 inches.
The Breek Arms AR-15 RG2-S MLOK Handguard comes with a barrel nut. You will need a 1 1/4" barrel nut wrench to install.
Yes, the Breek Arms AR-15 RG2-S MLOK Handguard will include the barrel nut and hardware required for installation.
The Breek Arms RG2-S AR-15 MLOK Handguard and wedges are made of 6061-T6 Aluminum and the barrel nut is made of Steel.
The Breek Arms RG2-S AR-15 MLOK Handguard has an internal diameter of 1.35". So it will most likely not work with the Adams Arms Low Profile Piston Kit. However, I recommend you measure how much clearance you need based on the measurements of the piston kit install on your rifle.
Yes, the Breek Arms RG2-S AR-15 MLOK Handguard weight varies depending on the the length of the handguard. The weight of each handguard is listed below. The 3.5 ounces refers to the weight of the barrel nut.
15"-13.3 ounces
13.7"- 12.7 ounces
11.7"-11.4 ounces
9.7"- 10.4 ounces
6.7"- 8.4 ounces
4.25"- 7.0 ounces