Welcome to HeavyBuffers.com. Manufacturing a full line of custom buffers for all applications ranging from .17 Remington to .50 Beowulf since 2003. Our roots are in Heavy Buffers for .308 ARs, including ArmaLite AR-10, DPMS LR308, Aero Precision M5, POF, LMT MWS, Noveske N6, Wilson Combat, CMMG, Daniel Defense, FNH USA, LWRC, Larue, Spike's ...
View Quote. With getting the complete lower for $125 that put the rifle at $600 not counting the optic and mount. I found the Leupold Mark AR 1.5-4 on sale for $230 and the Aero Precision SPR mount for $75. [ARCHIVED THREAD] - Radical Firearms 12.7x42 (50 Beowulf) upper issue. ARCHIVED.