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post #1 of 5 (permalink) Old 11-26-2007, 01:07 PM Thread Starter
Old Fart
 
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AR terms

What is A4, A3, A2 etc.?

What is B.U.I.S.?

Anyone shoot varmint with these?

What your favorite for a long range plinker/varmint brand?

"Don't taze me, bro."
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post #2 of 5 (permalink) Old 11-26-2007, 01:08 PM Thread Starter
Old Fart
 
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back up iron sights?

"Don't taze me, bro."
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post #3 of 5 (permalink) Old 11-26-2007, 01:37 PM
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post #4 of 5 (permalink) Old 11-26-2007, 01:37 PM
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Quote:
Originally Posted by GT98SVO
What is A4, A3, A2 etc.?

What is B.U.I.S.?

Anyone shoot varmint with these?

What your favorite for a long range plinker/varmint brand?


The numbers (A2, A3, A4) are the generations.

A1 = fixed carry handle, teardrop forward assist, triangle handguard, (semi or full auto for M16)
A2 = adjustable rear sight, 5/8" longer stock, heavier barrel, round handguard, (semi or 3rd burst for M16)
A3 = same as A2 but with the A1 fire control group
A4 = Flattop reciever (removable carry handle), (semi or 3rd burst for M16)

There's some goof info on this here: http://dunlaparms.com/faqs/What%20is...20A3,%20A4.pdf



BUIS = back up iron sight

Yes, you can definitely varmint hunt with them and its damn fun! (good optics definitely help!)


As far as favorite for varmint... I don't have one. I've done just fine with a "stock" 20" Armalite and a decent scope, but there are some guys who will tell you that you need a 24" bull barrel, $2000 optics, etc.


.

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post #5 of 5 (permalink) Old 11-26-2007, 01:39 PM
Lifer
 
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BUIS means back up iron sights.

A2=Forward assist, case deflect, modifed rear sights to adjust for windage etc.

A3=Same thing as an A2 but full auto over the burst method adopted by the A2

A4=flat top upper, forward assist, case deflect, burst etc etc.

In civilian world A3 and A4 is generally the exact same thing.
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