LWRC IC MKII SBR - 5.56
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The LWRC IC MKII SBR in 5.56 NATO is a short-barreled variant of LWRC’s MKII platform, available with a 10.5" or 12.7" barrel and offered in Black or FDE (Flat Dark Earth) finishes. Built around LWRC’s short-stroke gas piston system and a Monoforge™ one-piece upper, the IC MKII SBR pairs a reinforced receiver design with an M-LOK®-compatible handguard and a two-position, paddle-style gas block located inside the rail for suppressed/unsuppressed tuning.
This model features LWRC’s cold-hammer-forged, spiral-fluted barrel with a 1:7" twist, a nickel-boron coated bolt carrier group for easier maintenance, and fully ambidextrous controls (safety, bolt catch/release, magazine release, charging handle). The rifle ships with LWRC Skirmish™ backup iron sights, an A5-style adjustable gas block, advanced trigger guard, LWRC Ultra Combat Grip and compact stock, and a Magpul 30-round PMAG.
Key features
- Short-stroke gas piston system (LWRC) for reduced receiver fouling and simplified maintenance
- Monoforge™ one-piece upper with integrated rail-base for added rigidity
- M-LOK®-compatible handguard (scalloped rail access to gas block)
- Paddle-style 2-position adjustable gas block located inside the rail for suppressed/unsuppressed operation
- Cold-hammer-forged, spiral-fluted heavy-profile barrel; 1:7" right-hand twist (5.56 NATO)
- Nickel-boron coated bolt carrier group for improved corrosion and wear resistance
- Fully ambidextrous lower controls and charging handle for left- or right-handed operation
- LWRC Skirmish™ back-up iron sights and full-length top rail for optics
- LWRC Advanced Trigger Guard, Ultra Combat Grip, compact stock
- Includes one Magpul 5.56 PMAG (30-round)
Specifications
- Caliber: 5.56 x 45mm NATO
- Barrel lengths available: 10.5" (SBR) or 12.7" (SBR)
- Barrel twist: 1:7" RH
- Operation: Short-stroke gas piston (LWRC)
- Gas block: Paddle-style 2-position inside-rail A5 gas block
- Bolt carrier: Nickel-boron coated BCG
- Weight: ~7.0 lbs
- Overall length: ~30.53"–35" (depending on stock position and barrel)
- Muzzle threads: 1/2x28 TPI
- Finish options: Black, FDE (Flat Dark Earth)
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| Coating Type | Cerakote™ |
|---|---|
| Dimensions | 30.53x2x7 |


