• Matched Cerro Forge Upper & Lower Receiver (7075-T6 Type III Hard Coat Anodized Per Mil-Spec Forgings
• • Low Shelf
  • SAFE - SEMI - AUTO Marked
• Mil-Spec Dimension, 6-Position, MULTI-VENT Buffer Tube - 7075-T6 Type III Hard Coat Anodized Per Mil-Spec
• Sprinco White Carbine Spring (Cryogenically Treated) w/ carbine weight marked "C" buffer
• Pin Punch Weight Marked H2 Buffer
• 16" 4150 CMV 1/7 Twist, 5.56/.223 Barrel - 223 Wylde & .300 Blk available - Multiple Profiles Available (Limited Availability
• • M4 Feed Ramps in both chamber and upper receiver!
• HPT/MPI 9310 Precision Ground H&M ROD Marked Nitride Bolt
• Chrome Coated Firing Pin
• Nitride Cam Pin
• M16 - 8620 Bolt Carrier (Non-Slab) Standard Design
• Billet Extractor
• Billet Gas Key: Rock-Op's Exclusive Stack-Six Staking!
• Mid-length Gas (Nitride Finish SS Gas Tube)
• Stainless Nitride Coated .750" Low Profile Gas Block
  • Our Barrels Are Double Dimpled At Our Facility For Gas Block Security For Use In Combination With Our Knurled Set-Screws. These gas blocks ARE NOT BULLET PROOF INSTALLS (Pinned) We can offer that service for an additional fee, just inquire. This service comes standard on our ROD-15S Edition Rifles.
• Ripcord Industries 15.75" MLOK Rail
  • (3" MADE IN THE USA - ALUMINUM MLOK Rail Section INCLUDED)
• Magpul PMAG
• Magpul K2 Pistol Grip (Textured) (Black)
• Magpul MOE Buttstock (Black)
• Magpul MBUS Gen 3 Sights
• A2 Birdcage Flash Hider
• Mil-Spec M16 Bolt Catch
• Mil-Spec M16 Mag Release and button
• Mil-Spec M16 Detent Trigger Guard (Glove-Ready Detent To Drop Away From Receiver)
• Geissele Mil-Spec Trigger (NON-MIM S-Marked)
• Rock-Op Defense EXCLUSIVE Ambi-Safety
• Mil-Spec Castle Nut and QD Endplate STAKED (2X)
• Mil-Spec Forged Charging Handle

Weight: 7.4 lbs. w/ empty PMAG

Overall Length: 32.75"

Manufacturer's Note: We lap every one of our upper receivers to ensure the best possible marriage of the barrel and upper receiver! All whole firearms and assembled upper-receiver groups are test-fired and extensively function-checked before leaving our facility and are guaranteed to work right out of the box! Every bolt face and barrel are gauged together to ensure the safest and most reliable configuration going to our customers!