Out of stock $558.00 Sig 300 Blackout, 16", Black, Caliber X-Change Kit, Sig MCX SGCALX-MCX-16B-300-TAP
Out of stock $546.00 Sig Caliber Exchange Kit, Upper, 300 Blackout, 6.75", Black, Tapered Lug, Fits Sig MCX CALX-MCX-6B-300-TAP
Out of stock $348.00 Spike's Tactical Barrel, 300 AAC Blackout, 10" Barrel, 1:7 Twist, Chrome Lined, M4 Barrel Extension SB31003-MP
Out of stock $179.10 Spike's Tactical Barrel, 223 Rem/556NATO, 8.1", Black Finish, Cold Hammer Forged, 1:7 Twist SB50810-PL
Out of stock $314.96 Spike's Tactical Barrel, 223 Rem/556NATO, 14.5", Black Finish, Cold Hammer Forged, M4 Extension, 1:7 Twist SB51406-ML
Out of stock $743.40 Spike's Tactical Upper, 223 Rem/556 NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Flat Top, Four Rail Handguard, Chrome Lined, Black Finish STU5025-R9S
Out of stock $799.00 Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish, M4 LE w/12" SAR Rail, with SAR Rail System and No Mags STU5025-S2S
Out of stock $548.00 Spike's Tactical Upper, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Black Finish, Mid-length Gas System, Mid-length Handguard, Front Sight Post, A2 Flash Hider STU5035-MLS
Out of stock $878.00 Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, A2 Chokes, Black Finish, M4 LE w/12" SAR Rail, with SAR Rail System and No Mags STU5035-S2S
Out of stock $938.70 Spike's Tactical Upper, 223 Rem/556NATO, 16" (14.5" with Pinned Brake) Barrel, Fits AR Rifles, Black Finish, Flat ToP, No Sights, Lightweight LE w/12" SAR3 w/Dynacomp Ext., Four Rail Handguard and No Mags STU5050-S2D
Out of stock $630.00 Spike's Tactical Upper, 223 Rem/556NATO, 16" FN Hammer Forged Barrel, Fits AR Rifles, Mid-length, Front Sight Post, Black Finish STU5435-MLS
