AR-MPR interactive AR-15 Build - Planning your build - UltimateReloader.com

[hateliberals1]

hype

[seansound]

Slick video. Great info / reasoning with the caliber choice.  ..yes, what video camera are you using?

[askaryambus]

Wow! what camera did you use?

[gavintoobe]

Actually the A3 is a flattop, but is sometimes offered with removable handle attached.

[dudley2112]

isnt the a4 upper the flat top? and the A3 the carry handle with the improved sights that have the elevation control in the handle? i thought the a3 was just the a2 but with full auto not burst?

[RemMan700]

@dudley2112 usually A3 is a flat top that may have the removable carry handle or no handle at all. A3 has the triangular A2 fixed front sight. A4 is flat top receiver and no fixed A2 front sight.

[TheRogueJackass]

@RemMan700 A3 is not a flattop. It is an A2 with the full auto option. A4 is the flattop.

[RemMan700]

@TheRogueJackass When you are talking semiauto only guns A3 is normally designated by manufactures by having a flat top receiver and an a2 front sight. You are right about a select fire a3 being fixed.

[TheRogueJackass]

@dudley2112 No, you are right. The A3 is NOT a flattop receiver. It is an A2 with the full auto option. Flat top is the A4.

[chillerboy134a]

Gavin,

Good idea on the trigger. The barrel and the trigger will be two things that will truly make the difference.