Based on the excellence of the proven iRMT upper receiver and full ambi billet lower, the SP10 build kit offers unrivaled reliability, performance, and accuracy. This upper/lower/handguard trifecta is the perfect jump start to your next AR10 build.
The SP10 billet lower is fully ambidextrous having superior weapon controls such as the ambi magazine release and ambi bolt switch that allows the shooter to lock back or release the bolt with a single finger. The ambi controls, and take down pins come installed and factory tested. All you will need on this lower to complete it is a grip, stock, trigger, and safety selector.
The SP10 billet upper features our Integrated Rail Mounting technology (iRMT) integrating the rail mounting points into the upper receiver retaining the stiffness of a true monolithic upper while allowing the rails to be completely modular. This new upper design is considerably thicker in the most critical area and will aid in squeezing all of the potential accuracy out of your rifle. The dust door is installed so all that's missing is a charging handle, bolt carrier group, and an accurate barrel.
Coupled with the receiver set is the Seekins Precision 15" MLOK SP3R free float handguard. Flat on the bottom, the SP3R handguard provides stability when shooting off objects. Precision machined from 6061-T6 aluminum, this uniquely designed handguard also has a top picatinny rail and integral QD sling mounting points, designed for precision shooting.
Note: Any SR25/DPMS/AR308 pattern magazine like the .308 Magpul Pmag will work well. The AR10 Armlite magazines will NOT work.