Albroswift

Maybe up your buffer weight and/or spring? Both of mine run pretty clean. If you have a case gauge it would be interesting to see if the spent casing still fits. I've now had the chance to reload and shoot brass that has made a pass through the blowbacks and find I am not needing to use a push through sizer as some suggest, just standard resizing die. (I'd probably just throw the brass away and order more off gunbroker if I had to go through the effort of push through sizing, not very progressive press friendly...)

Big Rick and his new Facebook page

BadAss

Got it out to the range today, more fun then a barrel of monkeys! Drills the 50 yard target. Finger sized holes. Fiocchi 1 oz slugs.

got to give a shout out to @98Z5V ! put a Armalite length buffer tube and an EA1095 spring on the AR-40 Carbine, if it works for the 308 why not the 40. 10oz buffer and a little spacer hot off the lathe, Full blow loads, 1500 fps no case bulge and SMOOOOOTH....

5D Pro Jig should be showing up today, along with a pistol cal 80% lower. Have a $39.00 223 80% to practice on just showed up yesterday. Might not really be the least expensive route for a build but dang it I like making things!

Upped the ante had 180 Cabelas bucks and a 25$$ gift card left over from Christmas, pretty much covered a VMX3-T without raiding the tax fund. Nice optic as you would expect from Vortex.

Yes on the glock mags, 9MM and .40 are identical outside dims. Happy to take the heat, Sketch!

All you need is to build is the upper, use your 9mm lower and save a few bucks to start. Joe Bobs still has the KVP barrels for $79.00, (I have 3 so far) The Stern Defense BCG has been solid for me, $143.00 (2 so far). Mill spec uppers are dirt cheap, even the dedicated ones with LRBHO are only a little over $100. Ebay for a handguard and nut, $20-$30, There you go! $350 or so plus optics and lead!

We have one up north of here we call the "Sultan Dump and Shoot" but gets pretty crowded with all the dumping and shooting and 2 or 3 trail heads in the same area.

I have to drive 2 hrs to get to a good pit, but we're the only ones there. We make a day of it, coolers, lawn chairs and folding tables. Range is 10 minutes from the house, 50 yard pistol and 200 yard rifle, but yea, rules...

gravel pits and ARs go together like peas and carrots!

Note: The Winchester Ranger off the Winchester Website shows 1210 FPS out of a 4" Barrel. Gained almost 300 FPS out of the 16" barrel. 10MM Mag velocities. Like to know what powder they use!

Another Range Report Rifle and trigger behaved, 10 oz buffer worked well, had some mag issues. The $12.00 cheapos work flawlessly, older stock glock mags were tempramental. It appears the followers in the cheapos are a faithful copy of the Glock #10, I have what appear to be "Old Style" in the rest of my mags. (Go figure, bought them all prior to Clinton's ban) Anyway, everything rocking so had a chance to get some chrono-radar data. IPSC loads, 180 RNFP that run just under 1000 fps in the limited gun My "Hot" 180 RNFP, all over the place. Maybe just pushing too hard, but my theory is the chamber has a little to much freebore for the slower powder. 10mm mag velocities. Law Dog 155 gr hollow points. Yowza!

"Pistol or rifle?" Carbine. Tromix 14.5 barrel with birdcage pinned and welded.

Took it apart, inspected, put it back in. Functions correctly. Think either there was a little piece of?? under it or maybe one leg of the spring was mis positioned. Good thing, I like the trigger really breaks clean for 50 bucks. Maybe get back to the range tomorrow

Range Report. Other then a couple minor issues shot well EXCEPT: Trigger didn't work properly. Need to engage and disengage safety after every shot. IF the BCG was operated with the charging handle, trigger worked. IF I held the trigger in fire, operated the charging handle, trigger would lock in the disconnector catch, wouldn't release to the sear catch. I think I'm explaining right. Took a while to figure this out. When shooting, the hammer would catch on the disconnector, when the trigger was released, the hammer didn't spring up to the sear. Had a radian talon ambi 45 deg, changed to 90 deg, changed out completely with a mil spec safety. When seperated from upper, hold trigger push down on the hammer it would lock on disconnector and not release. Anyway, trigger is the ALG Defense Quality Mil Spec Trigger - QMS from Primary arms. $50.00 Cheapo Anderson in the other one, Same Radian ambi safety, receivers identical sequential serial numbers. Guess I'll try another Anderson. I would have swapped out at the range but didn't want to mess with the anti-walk pins.

Really like the "No gas block" profile of the blowback carbine. Property taxes due EOM 😦 build fund taking a hit. After I recuperate from that hopefully on to the 458 build.

.

Evil Cousins Not going to say "Finished" up my AR-40 Carbine tonight, stock, handguard, birdcage and grip out of the spare parts bin, but it's ready to shoot tomorrow! Spikes upper and lower, KVP 16" Barrel, chucked a 308 birdcage in the lathe and opened it up to .413, KVP 10oz buffer, and Eotech 512. Always wanted to try an Eotech, one on sale the other day $389.00 no tax free shipping, had to grab it. Loaded up some full blow loads last night, 6.7 Vihtavuori 3N37 / 180 gr jacketed RNFP. Probably to add the Vortex 3X magnifier and some cosmetic upgrades to it if it turns out to be a shooter

10 yards at 4:00 seems to indicate a healthy bolt and recoil system, that's about where the spikes dedicated lower and the anderson with spacer blocks throws them also. Stern Defense BCG + 7.5oz 4-1/8" KVP buffer Just went in halves on the 5D Pro jig, first up friend wants to mill his own 40 lower for a pistol build. AND I have a Spikes upper and a Eotech 512 in the mail should just about complete my AR-40 carbine build. This $hit is just too much fun.

buffer weight? length? 7inch tube?

"Load in the morning and shoot all day!" --Mr Winchester? I must have gotten lucky with the AR40, 12 dollar 30 round mags flawless, a little tight but typical of Gen 1 drop free mags as well, a little filing to remove a square shoulder and all was good. What BCG are you running? Buffer?

And what mags?

Making confetti! what ammo/bullet type/weight? Reloads or factory? I'd like to do a 9mm build just to burn up my stash of 9mm Major ammo! (The uber glock, cool as it is, just doesn't shoot like a $4K race gun, go figure...)