[WTS] RTB 13.9" Lightweight 5.56 barrel, KVP 3 lug adapter

Timestamp: https://imgur.com/a/fRGy7OK

13.9 RTB (right to bear) brand lightweight taper profile barrel (.625 gas block) 5.56, 1/7 twist mid gas, 20.6 oz. Barrel is from test upper, only 60 rounds through in excellent condition. $110

KVP 1/2x28 3 lug adapter - $25

Prices shipped, paypal FF preferred.