Yankee Hill Machine Specter XL Features The Yankee Hill Machine Specter XL is built on a billet receiver set offering increased rigidity and a cleaner aesthetic compared to a standard forged AR-15 receiver. Chambered in 6.8 SPC this carbine runs a 16-inch 4140 heat-treated steel barrel with proprietary ball-cut fluting and a Melonite QPQ finish taking advantage of the cartridge's flatter trajectory and increased energy retention over comparable intermediate rounds at extended ranges. A Geissele 2-stage trigger with a 5-lb. pull gives shooters a crisp predictable break for improved precision and the semi auto action cycles reliably shot to shot making this carbine suitable for both range training and field use. Yankee Hill Machine has built its reputation on precision machined AR-15 components and that manufacturing expertise carries directly into this complete carbine build. The SLR Slant KeyMod free-float handguard includes a top Picatinny rail for mounting optics and a YHM Slant compensator/muzzle brake helps manage recoil and muzzle rise. YHM Q.D.S. hooded flip-up aluminum sights give shooters a folding ready backup sighting system and Magpul furniture including a MOE grip and adjustable CTR stock rounds out a comfortable field-ready build. A billet receiver set like the one used on the Specter XL allows for tighter tolerances and a more integrated design compared to assembling a rifle from separate forged upper and lower receivers. The 6.8 SPC chambering gives this carbine a niche appeal among shooters looking for performance beyond what 5.56 or .223 typically offers at distance. Yankee Hill Machine's background in suppressors muzzle devices and rail systems means this carbine benefits from a company well versed in the full AR ecosystem. Shooters interested in a billet 6.8 SPC carbine can find the Yankee Hill Machine Specter XL for sale at GrabAGun. Yankee Hill Machine Company Specter XL Specifications Manufacturer: Yankee Hill Machine Company Model: Specter XL Action: Semi Auto Caliber: 6.8 SPC Capacity: 30 Rounds Barrel Length: 16 Barrel Material: 4140 Heat-Treated Steel Barrel Description: Ball-Cut Fluting Melonite QPQ Finish Trigger: Geissele 2-Stage 5-lb. Pull Handguard: SLR Slant KeyMod Free-Float Top Picatinny Rail Muzzle Device: YHM Slant Compensator/Muzzle Brake Sights: YHM Q.D.S. Hooded Flip-Up Aluminum Stock/Grips: Magpul MOE Grip Adjustable Magpul CTR Stock Receiver: Billet Finish: Black Available At: GrabAGun