Quarter Circle 10 45ACP Glock Cut Bolt Assembly

 Quarter Circle 10 is proud to offer our blowback pistol-caliber bolt carrier group for .45 ACP Glock magazine platforms. These are the best pistol-caliber BCGs available, and have been designed and milled to our exacting specifications based on our commitment to being Made For-Not Modified. These bolts are precision machined, with our patent-pending AR-15 style extractor for flawless operation. Each bolt features the “Glock Cut” for reliable feeding in the narrow feed lips of .45 ACP Glock magazines. Our bolts are build for compatibility with any standard AR trigger group, and come complete and ready for installation right out of the box. Includes: Bolt Firing Pin Firing Pin Spring Firing Pin Cotter Pin Extractor Removable Mass in Rear 15 oz assembled weight Now, you can build your pistol-caliber platform with the peace of mind of knowing that every component is of the highest quality. Whether for home-defense, law enforcement, competition, or plinking, Quarter Circle 10 has you covered, with our philosophy of Made For- Not Modified. Each of our parts is engineered and manufactured with pistol calibers in mind, rather than modified from rifle-caliber components as an afterthought. We’re Quarter Circle 10, the AR Pistol-Caliber brand.