Upper+mags work 100% and have had only had 350-375 rounds fired. Minimal recoil, great for women & kids. Bought it as a lark to shoot at local indoor range but moved away and wanna lighten my load to fund other projects. Since this upper has preban features (flash hider and, IIRC, bayo lug) it can only be used without modification on preban AR15-type lower receivers.
[Don’t confuse this with Olympic Arms & Dalphon Arms 9mm uppers that are a different system.]
The upper was custom-constructed by J&T Distrib using:
· a [b]factory Colt[/b] 16" chrome-lined 9mm barrel w/flash suppressor
· a [b]factory Colt[/b] bolt assembly,
· a [b]factory Colt[/b] 9mm buffer,
· newer 2-piece Weaver mag block design that doesn’t require drilling/pinning your valuable preban lower. (I've heard some reports of folks having feed problems using some of the newer 1-piece “drop-in” mag blocks now on the market, since vertical position can't be adjusted.)
Upper rcvr itself is a quality flattop upper sold by J&T (produced for FN). Ordered it this way since Colt doesn’t offer a flattop 9mm configuration and I wanted to use an Aimpoint optic sight on this carbine – a very fun combo. (This upper includes a forward bolt assist device which isn't operational on the 9mm bolt; a regular Colt 9mm upper receiver doesn’t have any forward assist button. I believe a gunsmith can add ridges to the right side of the bolt if you’d like this, but it’s really an unnecessary feature on a 9mm.) You can also add a commonly-available regular detachable “A3” carry handle to this upper, instead of an optic sight, and it works great (try to get one with unnumbered index wheel: .223 markings won’t make any sense for 9mm).
Upper's accompanied by six (6) [b]factory[/b] Colt 9mm hi-capacity magazines: four are 32 rounders, two are the shorter (and handy) 20 rounders. (I don’t think I’ve used the 25 rounders yet.) Additionally, another six or seven (?) hicap aftermarket (most are Vector Arms Uzi-derived) mags accompany this package, although these will not hold the bolt open after last round is fired. I've tested one or two of the latter.
· If you buy this from me, I want to see you a happy shooter. I’ll include nice detailed instructions and diagrams (of my own doing) to help you set this up properly, and impart some of my learning - proper adjustment of mag block seating is important.
· Aftermarket magazines can be a bit more sensitive to seating; I’ve only tested one or two of them. They also do not hold the bolt open after last round fired (only Colt 9mm mags do this). I’ll include detailed instructions/ diagram to ensure you can, if necessary, tweak the aftermaket mag’s mag-catch opening with a Dremel wheel (gently!) to assure proper seating depth and full mag catch engagement. [When setting up your AR you should configure mag block position to work 100% with the factory Colt mags. Once this is done, don’t change the rifle setup: get the aftermarket mags set up for your rifle. Again I will include documents on how to do this to save you range time & grief. Once this is done, the aftermarket mags work fine; I’ve helped several others get their 9mm ARs squared away.]
· Colt 9mm AR15s really like hotter ammo, and are known not to cycle with more anemic 9mm ammo like PMC. However, IMI/Samson 115gr and 124gr work fine, Winchester “white box” is fine, and the 147gr Uzi “black tip” 9mm submachinegun round works great too. (The latter type ammo is what this gun is designed for.) Don’t trim the buttstock recoil spring to work with crappy weak ammo - wrong fix, wrong problem!
· You may need to acquire a different hammer than the one supplied. If you have a non-Colt lower receiver or an earlier Colt AR15, you need to get a narrower hammer for milspec 0.153” pins. The Armalite AR10 hammer works fine. If you have a later model (prob post-89) Colt lower you'll need a true Colt 9mm hammer set up for 'wide' 0.170" hammer pin. (DO NOT USE ANY M16 FIRE-CONTROL PARTS; ONLY USE AR15 SEMIAUTO PARTS!!)
· A few later Colt preban (and most all Colt postban) lower receivers have an annoying “sear block” protrusion projecting upward from the rear of the receiver into the bolt travel path. This sear block will have to be ground down, removed, etc. Colt put this into production in a fit of political correctness (along with using nonstandard pin sizes) to emphasize its consumer rifles were sporting rifles and could not be converted to M16s. It is NOT illegal to remove this: other brands of lower receivers (Bushmsater, Armalite, DPMS, Olympic Arms, ASA, etc. do not have this “feature” at all.) The whole block does not need to be removed (though it can): just the part that protrudes above the upper’s top side and that interferes with bolt travel.
· No sales outside of USA
· I don't wanna split up magazines from upper: this is a complete deal, and I want the new owner to be happy, up & running quickly, and without him having to do much running around finding parts, magazines, etc.
· Sale only to folks residing where these items are legal.
· Items listed here are as-advertised, in fine shape (350 rounds is barely even broken in, esp. on a chrome-lined barrel), work fine, and this setup is sold in good faith. Glad to provide you with a more-than-reasonable amount of help via email/evening phone calls so that you’re happy with your 9mm AR15 carbine.
If you find you have problems beyond what my email/phone support can cover (hard to figure out how that’d happen), you’ll need to consult a gunsmith knowledgable about AR15s (and 9mm variants thereof). Advice: before installing this on your AR15, please ensure it’s indeed working properly in its normal .223 setup.
· COD, US Postal Money order or bank check preferred; I will ship within 24 hours of receipt of postal money order (except Sunday). We can talk about my accepting a personal check, but I will not ship items until check clears, and that could take a week.
· Postage/insurance are extra, and will run around $30.00 for insured US Priority Mail. I'll eat the excess over this and if it goes COD I will eat the COD fee myself.
· I have a top-notch buying & selling feedback rating on EBay; you can check my EBay feedback rating under my id ‘wmwiese’. I should have some feedback from awhile ago also on Auction Arms.
Thanks for reading all this. You will have fun with this nice toy!