556 7 11:38 How Effective is a 7.5 Inch AR-15? 22:53 Gun Gripes #345: "Are 7.5 Inch ARs Useless?" 16:57 PSA AR-15 7" 5.56 UPPER (part 1) - WARNING..Don't watch if you are LOW on COIN! 03:15 PSA 7" BARREL 556 cal AR PISTOL 05:22 VELOCITY TEST - 7.5" vs 10.5" vs 16" AR-15 17:21 When Is An AR-15 Barrel Too Short? 00:37 THE NEW G&G MGCR 556 GBB 7" & 12" 17:58 7.5" AR-15 Pistol | New Vital Zone Target 27:35 Goodbye RAM-7, Hello MTZ 556 META on Rebirth Island (Warzone) 06:19 Can you fire a 5.56 round through a 7.62 AK? 09:31 Why 5.7? || 5.7x28mm vs 5.56x45mm 10:23 What Does A Barrel's Twist Rate Mean And Why Does It Matter? 18:06 How Much Does Barrel Length Affect 5.56 Bullet Velocity? 08:26 Radical firearms 7.5" AR Pistol | BCG Failure 08:02 5.56 vs 7.62: Why the Military Still Uses 5.56 (Marine Reacts) 08:26 This Is Why the U.S. Military Uses 5.56mm Ammo Instead of 7.62mm 15:01 What Is The Effective Range Of 5.56? 04:46 AK-47 VS AR-15 - 7.62 VS 5.56 VS CONCRETE BLOCK 13:22 PSA 16" MID-LENGTH 5.56 NATO 1/7 NITRIDE 13.5" LIGHTWEIGHT M-LOK MOE EPT RIFLE 19:07 Goodbye RAM-7, Hello HOLGER 556 META on Rebirth Island (Warzone) More results