This bipod is compatible with picatinny 1913 rails. The ARCA compatible model can be found linked below:
https://www.opticsplanet.com/accu-tac-bipod-hd-50-lr-7-10-arca-spec-qd-alloy-flat-black.html
This ACCU-TAC HD-50 Heavy Duty .50 BMG Bipod is compatible with picatinny 1913 rails.
The ACCU-TAC HD-50 Heavy Duty .50 BMG Bipod will attach to picatinny 1913 rails.
This ACCU-TAC HD-50 Heavy Duty .50 BMG Bipod will attach to picatinny 1913 rail systems.
This ACCU-TAC HD-50 Heavy Duty .50 BMG Bipod requires a picatinny rail to mount to your rifle. The McMillan TAC50-A includes 3 1913 rail adapters that would allow you to install this bipod.
You will want the G2 spike set.
https://www.opticsplanet.com/accu-tac-lr-10-spike-sets.html
Yes, this bipod can mount to any firearm with a picatinny rail below the handguard. This bipod is just made to withstand the recoil of the 50 BMG.
This bipod would be an excellent choice for that platform. No additional parts are needed for install and use.