If your RRA 9mm is a model with a drop in handguard you would need to convert to a free float system which involves removing the delta ring system, end plate, and gas block, as these are free float handguards.
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by Ramjet, from OH, United States Asked on January 13, 2019
If your RRA 9mm is a model with a drop in handguard you would need to convert to a free float system which involves removing the delta ring system, end plate, and gas block, as these are free float handguards.