- Cut off a 2 inch piece of an old gas tube and pin it into the front sight tower to keep the handguard cap, and thus the handguards from rotating.
- Get Slash's 9mm Q-buffer. The Colt buffer is too short and allows the bolt carrier too much distance to slam into the bolt catch on the last round hold-open. Q-buffer is just enough longer to prevent that. Otherwise, you will need spare bolt catches. No, I am not affiliated with Slash, just a customer.
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