Right at 14 inches: the best balance, feel, and sound.
With right at 14 inches of barrel, the Defender with the Rosco barrel gives the best balance, the best feel, and the best sound performance.
Prefer the LaRue Tactical 14.5″ Stealth in .223 Wylde? It’s the heaviest of the Defender barrels, but it makes up for it in accuracy.
Order it as an SBR on an ATF Form 4, or pinned & welded to 16″ as a standard rifle.
| Caliber / Chambering | 5.56 NATO or .223 Wylde |
|---|---|
| Barrel Length | 13.95" (5.56) / 14.5" (.223 Wylde) |
| Barrel (make / material / profile) | Rosco THEDON Mid-Length 13.95", 416R stainless, 5.56 NATO: tuned for sound mitigation suppressed LaRue Tactical 14.5" Stealth, stainless steel w/ proprietary coating, .223 Wylde: built for accuracy |
| Twist Rate | 1:7 (Rosco) / 1:8 (LaRue) |
| Gas System | Mid-length |
| Muzzle Device / Thread Pitch | 1/2-28 threaded |
| Handguard | KAK Industries 13" M-LOK (Rosco build) BCM MCMR (LaRue 14.5" build) |
| Upper Receiver | BCM |
| Lower Receiver | Rock River Arms |
| Bolt Carrier Group | KAK Industries Down Draft SandCutter |
| Buffer / Spring | BCM Mk2 Mitigated Recoil System |
| Trigger | Ballistic Engineering Accurized Single Stage |
| Stock / Brace | Magpul STR |
| Grip | Hogue OverMolded, 30° |
| Finish / Color Options | Black, Black/FDE, or Black/ODG |
| Overall Length | 34" |
| Configuration / NFA Status | SBR (NFA item, approved ATF Form 4 required) or pinned & welded to 16" as a standard rifle |
| Warranty | Lifetime labor; most parts carry a lifetime manufacturer warranty |
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