Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Handguard AR-15 10.5 in M-LOK Black LPSN10.5 MLOK. 5in LO-PRO SLOPE NOSE Free Float Quadrail packs all the features of the Phase 5 Weapon Systems Inc 7.5in LPSN quad rail into a longer 10.5in model. These...