well the standard ar-15 is a colt. but now these days the most poopular are generally either DPMS or Bushmaster. the best of the Best is Barret and LWRC.
Yes, but don't use the original bolt face which came with the bolt and carrier if it's been used - get a brand new one.
No, the reason for this is because the marines need a bullet that can be used for all ranges. However, if you are in close corters or you need to stop a vehicle, then i would say the Beowulf 50 caliber carbine cartridge would do the trick. But the M4A1 must be used for the Marines. PS: i think that at least one person in the Platoon should have one.
1- M4A1 2- M16 3- M4 4- HK 416 5- Hk 36C 6- Hk 36k 7- AK47 8- HK G3 9- LWRC PSD 10- Tavor Assault rifle 11- Magpul Masada 12- AR-10 13- M-110 Sniper Rifle 14- M249 SAW PARA 15- 50 Beowulf 16- XM8 Assault Rifle 17- 6.5 Grendel Alexander Arms 18- Barrett .50 cal sniper 19- Ak 74 20- M16A1 21- Dragunov (SVD) 22- Beretta LTLX7000