The LWRC REPR MKII is a semi-automatic AR-10 pattern rifle chambered in .308 Win (7.62x51mm NATO). It runs a short-stroke gas piston system with a tunable gas block and pairs a 16.1-inch cold hammer-forged, spiral-fluted barrel with fully ambidextrous controls. This build is set up for side-charging operation with a threaded, muzzle-braked barrel. 
 

Key Specifications 

• Brand: LWRC International 
• Model: REPR MKII 
• Caliber: .308 Win 
• Action: Semi Auto 
• Barrel Length: 16.1 in 
• Weight: 9 lb 
• Finish: Black 
• Barrel Material: Cold Hammer Forged, Spiral Fluted 
• Stock Material: Polymer 
   

Detailed Features 

• Short-stroke gas piston operating system with an LWRCI tunable gas block for reliability across ammunition types 
• Monoforge upper receiver with an integrated rail base for mounting optics 
• Ambidextrous rear charging handle, safety selector, magazine release and bolt release 
• Adjustable Magpul stock and Magpul MOE grip paired with a 2-stage trigger 
• Threaded 5/8-24 muzzle fitted with an Ultra muzzle brake and LWRCI Skirmish back-up iron sights

LWRC has a strong reputation among AR-10 pattern rifle owners, and the REPR MKII carries that forward. Owners frequently praise the piston system for running clean and cycling reliably across a range of .308 Win ammunition. The fit of the upper and lower is commonly described as tight, with less wobble than lower-priced AR-10 builds.

The ambidextrous controls and side-charging handle are popular with left-handed shooters and anyone running the rifle suppressed, since the charging handle stays out of the way of an optic. Some owners note the REPR MKII runs heavier than a standard direct-impingement .308 rifle, which they attribute to the piston system and fluted barrel, but call it manageable with a sling.

Price is the most common complaint, since LWRC rifles sit at the premium end of the AR-10 market. Owners generally feel the machining and piston system justify the cost, though some would rather put the difference toward optics on a cheaper direct-impingement REPR. Aftermarket support for AR-10 pattern parts is broad, though LWRC-specific pieces like the Monoforge upper stay tied to factory sourcing.