Like Impacts 737R and 777R, the 787R is machined with the same repeatable tolerances that they have become known for. Indexing and headspace will be held to the same standards as all of their actions, which allows for prefit barrels. FeaturesThe one-piece bolt is designed with proper geometry and clearance to allow smooth operation under field conditions.Fluting on the top and sides of bolt body carry dirt away while a smooth bottom portion ensures smooth cycling.Black carbon nitride finish improves operation by increasing surface hardness and lubricity.Features 1-1/16 x 20 TPI Class 3 threads. ONLY barrels cut for a 787 will fit a 787Utilizes a Rem 700 Long Action foot print, and works with Rem 700 TriggersMag well cut for Wyatt extended mag box MBE-3 Long Action Box(3.825")Available in Lapua and Magnum bolt faces, with a 1.350" Diameter bolt bodyWill feed CIP length cartridges, and is both BDL and DBM Compatible Features a 90 Degree, two lug design, and interchangeable bolt knobs...