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Posted: 10/24/2006 6:11:31 PM EDT
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I did a search, but I am trying to find the exact specs for an A4 upper for my next build. Want to know about feed ramps, FSB, rail system, etc. Thanks in advance. |
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What do you mean by "exact specs" - a blueprint? If you just mean "what features does it have," then it's just a regular A3 upper receiver w/port door (dust cover), round forward assist, and normal rail on top for optics/carry handle. www.colt.com/mil/M16_2.asp <--- Colt M16A4 |
Sorry, edited my post to be more spefic. |
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peosoldier.army.mil/factsheets/SW_IW_M16.pdf Standard feed ramps KAC M5 railed handguard system A2 FSB w/elevation-adjustable sight post (standard A2) A3/A4 flat top upper w/Mil-std 1913 Picatinny rail Standard A2 stock 20" chrome-lined government profile (light under handguards, heavy past FSB) 1x7 twist barrel A2 flash hider Based on what I've read and seen, it's basically just an M16A2 with an A3 flat-top upper and an expensive Knight's Armament Corp. (KAC) 2-piece rail system for handguards. ETA: Modular weapons system to go with that upper:  en.wikipedia.org/wiki/M16A4 |
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