GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $775.77 LE6933CK show more like this 14.99 Defense Depot GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $785.00 LE6933CK show more like this Calculated in Cart DACK Outdoors GC_UPC Colt M4 Upper 5.56 11.5" Lw Blk $796.67 LE6933CK show more like this Tactical Surplus USA GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $811.73 LE6933CK show more like this Huligan Arms GC_UPC Colt Firearms M4 Complete Upper Assembly Only Black .223 Rem / 5.56 11.5-inch $817.99 LE6933CK show more like this 15.11 GrabAGun.com GC_UPC Colts Manufacturing Complete Upper LE6933CK, 223 Rem/556NATO, 11.5 in Lightweight Barrel $818.55 LE6933CK show more like this lat rate starting at $11.99 Hinterland Outfitters GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $821.00 LE6933CK show more like this 14.95 TheGunDock.com GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $836.67 LE6933CK show more like this 19.99 The Armory at LTT GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $856.01 LE6933CK show more like this Free on Guns, $9.99 Accessories, $14.99 Ammo Tombstone Tactical GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $858.42 LE6933CK show more like this Free shipping over $400 (Excludes Ammo) Gman Sport GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $865.95 LE6933CK show more like this Free shipping on orders over $300 Skogen’s Gun Supply GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $873.48 LE6933CK show more like this 9.99 SHTF Tactical GC_UPC Colt 11.5" 5.56 NATO LW Complete Upper with Front Sight Base $879.99 LE6933CK show more like this Calculated in Cart Primary Arms GC_UPC Colt M4 Upper 5.56 11.5" LW Blk LE6933CK $885.88 LE6933CK show more like this Firearms $18.45, Free over $500 Shooting Surplus GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $888.54 LE6933CK show more like this Free on Firearms Acute Firearms GC_UPC Colt M4 5.56 Upper Receiver Groups - M4 Le6933 Upper Group 11.5in With Bcg And Sights $909.99 LE6933CK show more like this additional Brownells GC_UPC COLT M4 UPPER 5.56 11.5" LW BLK $922.99 LE6933CK show more like this Free Shipping On Orders Over $250 The Armories