Sources

Source 1 "Land Ops = Firepower + Mobility." Source 2 "Hybrid Buttstock Authorized." Source 3 "Assault Rifles and Automatic Carbines Revisited." Source 4 "Small Caliber Guns." Source 5 "An Alternate Look at Handgun Stopping Power." Source 6 "Detachable Magazine Systems for Bolt-Action Rifles." Source 7 "Defense Ammunition: DOD Meeting Small and Medium Caliber Ammunition Needs, but Additional Actions Are Necessary: GAO-05-687." Source 8 "Longer is Better." Source 9 "Small-Arms Ammunition Production and Acquisition: Too Many Eggs in One Basket?" Source 10 "Comparison of M-16A2 and M-4 Wounding Potential."