By now, the word is out: .300 Blackout works well with shorter barrels, especially in pistol configurations. Subsonic .300BLK rounds also love when you add a suppressor to those shorter barrels. Do it up with this build kit.
To start, you get a prebuilt upper assembly with an 8.5-inch barrel with a 9" lightweight MLOK handguard. You also get a few upgrades. We junked the regular A2 pistol grip and threw in a Magpul MOE grip and trigger guard. We also melted down that old stock trigger and replaced it with a better, polished one. Also, just for giggles and, well you know the other thing, we threw in the SBA3 adjustable pistol brace from SB Tactical. And of course, you get your choice of forged, billet or no 80% lower receiver.
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