Would love to get the proper parts to build a MK-12 (Mod0, mod1 and modH). It was the quintessential SPR of the early-mid GWOT, and could allow us to build other cool clones like the SEAL RECCE rifle gordy carbine and piss carbine.
Essentially the only parts needed are the OPS muzzle brake and collar combo, the OPS 12th model suppressor, the PRI carbon fibre handguard, the A.R.M.S. Swan Sleeve and the KAC FF RAS Long.