Knowledge Base

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Top 10 FAQs
	Ammunition, .223 & 5.56mm
	A PROSPECTIVE AR-15 OWNER/BUILDER'S PRIMER
	What is the proper "break-in" procedure for a chrome lined AR barrel?
	Beware the dangers of CHEAP AMMO!
	I purchased a Bushmaster XM15-E2S. It says, 223-5.56 caliber. Is it okay to shoot 5.56 ammo? One FAQ said not to shoot 5.56 in a 223 because of excessive pressure. I can not find XM15-E2S on your web site. Also I was told to shoot only brass cased ammo. Wolf ammo is steel cased. A notice that came with the rife said Wolf ammo cycled good at the factory from your rifes. Can I shoot Wolf ammo safely or should I stay away from Wolf steel cased ammo for this XM15-E2S?
	What is the best cleaning procedure for the AR? - and how often?
	What parts break most often on the AR15? - and why?
	Are heavy barrels better than standard barrels?
	Will a Bushmaster upper receiver match up with my Colt lower?
	The Basic Drill

Recently Added FAQs
	How will this move affect the warranty of my guns?
	I heard you’re relocating the Windham plant, is that true?
	Does the carbon 15 super light come with a case? how many magazines does it come with?
	Does the barrel on the Bushmaster Varminter Rifle come chrome lined? I know stainless barrels are not but this rifle is made of 5150 mil spec. steel correct? Thanks, Neil
	An earlier FAQ suggested Birchwood Super Black touch up pen for scratches. Specifically for the M4-type A3 carbine receiver, picatinney rail, etc. should I use aluminum or flat black? Thanks.
	are all the lower receivers the same in all calibers?
	Has the barrel for the 6.8 upper always been SpecII or did it used to be SAAMI? Has the barrel always been 1:11 or did it used to be a different twist? Thanks
	I have a mod. xm15e2s. and in order to get it close to the target you have to slam the sights all the way to the left. I had a pro look at it and he suggested the front sight looked pinch and off a little from the factory. he said to send it in and have it checked out. Barely used and was a hand me down from my grandfathers estate. Is their a Warranty? how does it work, or how much is it to get it fixed? It is a factory defect. -Cory
	I have the XM15 E2S with a 16" barrel i am using the midwest industries picatinny for grips and yankeehill front folding sight with bayonet lug. Will the piston conversion fit/work with they 2 mods?
	Do 6.8 spc barrels have chrome chambers and bores? Thanks, Jim.