LIMA SIX Belt Fed Upper Receiver w/Upgrade Inconel Straight Gas Tube

Firearms Direct Club is proud to offer the LIMA SIX Belt Fed Upper Receiver. The LIMA SIX is a game-changing upper receiver that installs on any mil-spec AR15 or M16 lower receiver and provides belt fed capability. While a few parts must be swapped on the lower receiver, no permanent modifications or gunsmithing is required. Please read the entire product description for important technical information before ordering.

Patent-Pending Stretched Upper Receiver

The LIMA SIX features a patent-pending stretched upper receiver, which provides an additional ~3/4″ of bolt carrier group travel compared to a standard AR15. This is a critical improvement for a belt fed firearm — the additional travel assists in delinking rounds from the belt, resulting in more reliable feeding. It also lowers perceived recoil and delivers a more controllable rate of fire. No other belt fed AR15 on the market has this upgrade.

Precision Top Cover

The LIMA SIX features a top cover unlike any other belt fed available. With user-adjustable tension on the hinge, two-point latch engagement, and an adjustable set-screw to take up any slack that may develop over time, the LIMA SIX has an extremely reliable ability to hold zero even after repeated opening and closing. Initial testing shows that sub 2-MOA accuracy is achievable — unheard of for a belt fed firearm.

Barrel Compatibility

The LIMA SIX is compatible with standard AR15 barrels (with simple modification), although factors like barrel length, profile, and gas system length must be considered before swapping barrels. Please refer to the Tech Info section for complete information regarding acceptable barrels.

Includes

• Complete Upper Receiver
• VSEVEN Inconel Straight Gas Tube (upgrade included)
• Modified Bolt Catch
• Buffer Spacer
• Recoil Spring

Requires

You must choose ONE of the following buffer system configurations:

• Buffer Upgrade Kit for the LIMA SIX (recommended — available from Firearms Direct Club)
• An AR10-style buffer (short, 2.5″), H2 minimum weight (for semi-auto ONLY)

Specifications

• 5.56×45mm NATO
• 7075-T6 Upper Receiver and Top Cover, Type III Hardcoat Anodized
• 18″ Chrome Lined Chrome Moly Vanadium Heavy Barrel
• Midlength Gas System (Direct Impingement)
• Midwest Industries 10″ T-Series Combat Quad Rail
• Billet Machined Hardened 17-4PH Feed Tray
• K-Spec Bolt with Dual Ejectors
• 8620 Bolt Carrier, Full Auto Cut
• Tool Steel Belt Feed Components
• Billet Machined Aluminum Charging Handle
• Threaded ½-28 with A2 Flash Hider

Additional Information

Please review our ITAR and Blemish Policies prior to purchase. LIMA SIX is a trademark of its respective owner; Firearms Direct Club is an authorized reseller.