Daniel Defense DDM4 GL/SSC Features The Daniel Defense DDM4 GL/SSC is built around a 12.5 inch chrome-lined barrel machined from Chrome Moly Vanadium Steel and cold hammer forged for exceptional durability finished in a mil-spec heavy phosphate coating that stands up to hard use in the field. This government profile barrel on a carbine-length gas system was chosen to replicate the exact configuration of the original ultra-rare GL/SSC rather than approximate it with common carbine components. For collectors and shooters who want historical accuracy rather than a modern reinterpretation this barrel specification is the real thing. The free-floating RIS II rail integrates all M203 grenade launcher mounting hardware directly into the rail itself eliminating the need for separate mounting parts or special tools while preserving real estate for additional accessories without disturbing barrel harmonics. This design solves a problem that plagued builders who spent years and significant money trying to replicate the setup with aftermarket parts and workarounds. For enthusiasts who have long sought a genuine GL/SSC configuration having the M203 and suppressor compatibility built directly into the rail removes every compromise those earlier attempts required. Manufactured in the USA to Daniel Defense s exacting standards the GL/SSC carries the same build quality and attention to detail the company is known for across its broader AR-15 lineup. Because only 25 original examples ever existed this reintroduction gives a much wider range of collectors and shooters legitimate access to a rifle that was previously locked away in private collections. For collectors and SBR enthusiasts who want to own a piece of firearms history built to the original specification the GL/SSC is available for sale at GrabAGun. Daniel Defense DDM4 GL/SSC Specifications Brand: Daniel Defense Model: DDM4 GL/SSC Action: Semi-Automatic Caliber: 5.56 Barrel Length: 12.5 Barrel Material: Chrome Moly Vanadium Steel Cold Hammer Forged Twist Rate: 1:7 Capacity: 30+1 Magazines Included: 1 Handguard: Free-Float RIS II Gas System: Carbine-Length Threaded Barrel: Yes Muzzle Device: Flash Hider Finish: Black Mil-Spec Heavy Phosphate Color: Black Available At: GrabAGun