Be warned sometimes one upper is not enough:)
Attachment 4211
From top
High Standard upper and parts kit, CMMG .22 16" Barrel, Magpul Carbine MOE guards
High Standard upper and parts kit, DPMS .223 1:9 16" Barrel KAC RAS, Trijicon TA01NSN
High Standard Upper and parts kit, S&J Hardware .223 1:7 14.5" Barrel, YHM Midlength FF Rail, JP Adj gas block, HRE Suppressor
High Standard Upper and parts kit, Trueflight .223 1:8 Ultramatch 18" Barrel, DD FF Rail, Badger Ordinance gas block, OPS Inc Brake, Leupold Mk4 2.8-8x32
Factory Colt SP1 Upper .223 1:12 20" Govt profile barrel
DPMS A2 upper and parts kit, Accuracy Speaks .223 1:8 Match barrel and FF handguard
Factory Bushmaster Upper, .223 1:9 20" HBar, KAC M5 RAS, Trijicon TA31RCO-A4
Factory CMMG .22LR 20" Govt Upper, KAC M5 RAS, Trijicon TA31F