Classic Army compatible upper receivers

[Mtgriz]

Call Dwayne. Seriously.

The amount of spare parts, lemon guns, random stuff and just weirdness is astounding.

Marui SPAS, mostly functional? Check.
11,000 M14 stocks of various make and model? Check.
Marui Resident Evil STARS M9, mostly functional? Check.
Boxes upon boxes of parts for MP5, M4, M16, AK, AUG, M249 and everyother AEG made? Check.

Hell, I've found classic airsoft GBB M4 mags that are older than I am randomly sitting on shelves. They have old discontinued WA pistols, some trademarked KSC SIG pistols, even one of those old Marui spring XM177s.

[pulsipher]

madbull made a CA compatible upper

[timmychang]

what year was your CA M4 made. does it have the roll pins or the molded posts that secure the two halves together. the posts right below the charging handle. unless you find the right match, most likely you will need a new upper and lower to be compatable. call dwayne as they may just have something down there.

[timmychang]

its probably the metal roll pins then. you can tell by the size of the receiving hole for the pin/post. if its a tiny pin hole, its a roll pin, if its approx. 1/8 in diameter, its a molded post from the upper. to be sure, take a picture and send it along to whom ever you get one from to be sure of its compatability.