M4-76 UPPER

STEEL BARREL NUT

WEDGE LOCK DESIGN

INCLUDES A STEEL SOLGW 4041 QD SOCKET & Pinned /Welded Nox
These do NOT INCLUDE A CHARGING HANDLE OR BCG

AT SONS OF LIBERTY GUN WORKS WE BELIEVE IN QUALITY MIL-SPEC OR BETTER PARTS. WE BELIEVE THERE IS NO SUBSTITUTE FOR QUALITY AND THAT YOUR GUN SHOULD BE BUILT RIGHT THE FIRST TIME, READY FOR HARD USE RIGHT OUT OF THE BOX. WE BELIEVE A QUALITY BOLT CARRIER GROUP AND A QUALITY, ACCURATE AND LONG LASTING BARREL ARE THE HEART OF A COMBAT GRADE WEAPON. WE BELIEVE IN PROPERLY TUNED WEAPONS USING THE CORRECT GAS SYSTEM LENGTH AND QUALITY BUFFER SYSTEM COMPONENTS SUCH AS THE VLTOR A5 SYSTEM AND SPRINCO TACTICAL BUFFER SPRINGS. WE BELIEVE IN OUR PRODUCTS AND WE BACK THEM UP WITH A LIFETIME WARRANTY. OUR WEAPONS OUR MEANT TO BE USED HARD AND GO IN HARM’S WAY, THEY WON’T LET YOU DOWN.

THE M4-76 IS OUR NEWEST RAIL DESIGN. IT IS BUILT WITH ALL HIGH QUALITY COMPONENTS INCLUDING A STEEL BARREL NUT. AT SONS OF LIBERTY GUN WORKS WE ALWAYS TELL OUR CUSTOMERS, ITS NOT WHAT A RIFLE COMPANY TELLS YOU, IT’S WHAT THEY DON’T TELL YOU. BELOW YOU WILL FIND THE COMPLETE SPECIFICATIONS ON THE M4-SL. WE HAVE BUILT OUR GUNS TO RUN THROUGH YEARS OF HARD USE, AND WE HAVE NOTHING TO HIDE.

BARREL: SONS OF LIBERTY GUN WORKS 13.7” 4150COMOV 1:7 MPI HPT BARREL
CALIBER: 5.56 NATO CHAMBER
BARREL STEEL: 4150 CRMOV (CHROME MOLY VANADIUM PER MIL-B-11595E)
TWIST RATE: 1/7 TWIST SIX GROOVE
THREAD PITCH: 1/2-28 THREADED MUZZLE
GAS BLOCK: .750″ GAS BLOCK JOURNAL WITH APPROPRIATELY SIZED GAS PORT
BARREL FINISH: QPQ CORROSION RESISTANT FINISH
BARREL EXTENSION: QPQ COATED M4 FEED RAMP EXTENSION
HIGH PRESSURE (PROOF) TESTED (HPT)
MAGNETIC PARTICLE INSPECTED (MPI)

UPPER RECEIVER:
MATERIAL: MADE FROM MIL-SPEC 7075-T6 ALUMINUM CERRA FORGE FORGINGS.
EXTERIOR FINISH: ANODIZED TO MIL-SPEC MIL-A-8625F, TYPE III, CLASS 2, HARD ANODIC COATING, FLAT BLACK DYE, NON-REFLECTIVE, NIAC SEAL
INTERIOR FINISH: DRY FILM LUBE
T-MARKS: ENGRAVED T-MARKS

CHARGING HANDLE: NONE

BCG: None

GAS BLOCK: SONS OF LIBERTY LO-PRO GAS BLOCK MADE FROM 4140 STEEL AND NITRIDE TREATED

GAS TUBE: SONS OF LIBERTY MELONITED STAINLESS STEEL

RAIL SYSTEM: SOLGW M76 WEDGE LOCK RAIL

M-LOK ATTACHMENTS

STEEL BARREL NUT

MUZZLE DEVICE: SOLGW Nox ( pinned)

INCLUDES: STEEL 41140 QD SOCKET M-LOK