Searched around for lightweight hunting rig as the only grendel I have now is a 20" BHW, which is on the heavier side. For the money, $300 is pretty good for a barrel, gas block, gas tube, upper reciever, and charging handle. Figure I have most of the other parts in the bin and looking to run a magpul slim handguard for simplicity. Will get some accuracy and chrono reading when it comes in. Will see how the chromoly melanite barrels do over the stainless version. Just noticed I put this in the wrong section if a mod could move it up one please.
Bought an AA builders kit with 16" LW for hunting upper
Collapse
X
-
Bought an AA builders kit with 16" LW for hunting upper
Last edited by joedirt199; 08-15-2017, 02:29 PM.Tags: None
-
-
Kit arrived today. Pretty fast for ordering on sunday evening. Barrel looks good, barrel extension to receiver fit could be tighter so I had some green loctite lying around and gave it a liberal dose. Also lapped up the front of the receiver. Lock tight is drying over night. Railed gas block is of the lower than receiver height varity so was going to use a troy low profile gas block. Looked weird with the gas block hanging over the first ring of the barrel so I guess the railed one will have to do. Could have provided a gas tube pin so I had to scrounge the one from the troy.
Waiting on a magpul mid-length slim grey handguard and a precision armament thread adapter so I can put my kaw valley linear muzzle brake on the Alexander Arms threading.
Items weren't really wrapped in the bubble wrap durring shipping so there was some small rubs but no big deal. Have a NiB rguns bcg to go with my faxon bolt I just got in the group buy.Last edited by joedirt199; 08-18-2017, 03:28 AM.
-
-
Got it put together.
Alexander Arms upper receiver
Alexander Arms extreme lightweight 16" melonite barrel
Alexander Arms railed gasblock and gas tube
Alexander Arms charging handle
White Oak 10 moa scope riser
TPS rings
Weaver Grand Slam 3-10x40 tactical scope
Magpul slim midlength handguard in grey
Kaw Valley .308 linear muzzle comp
Precision Armament thread adapter for the muzzle comp
Rguns NiB bolt carrier
Faxon group buy bolt
weight 5.8 lbs on a bathroom scale
now to get some trigger timeAttached FilesLast edited by joedirt199; 08-21-2017, 07:28 PM.
Comment
-
-
Well got to run about 24 rounds through it. Functions fine with carbine buffer stock and rifle buffer stock. Chamber seems tighter than my BHW chamber as the brass was measuring right where my shoulders are at after sizing for the BHW barrel. Tried fire forming some 7.62 brass and some got jammed where as they functioned fine in the BHW barrel. Accuracy was less than stellar so will have to mess with the rounds again to figure it out. Not a lot of rounds for break in so may just need more rounds down the pipe.
If accuracy continues to struggle may switch out the hanguard for a free float tube.
Comment
-
-
Ok so an update on this build and accuracy potential. I was getting large groups 2-3" with its current setup, plastic magpul handguard. Saw ALG had basic free float tubes on sale for $50 and decided to switch up to free float the lightweight barrel. Also found a used bcm upper receiver and am familiar with their tighter tollerences for the barrel extension area. The alexander arms receiver was very loose and required a lot of green loctite to tighten things up.
Got the barrel and new free float handguard mounted up. Bore sighted at 50 yards and was surprised no adjustment was needed to zero. Groups went from couple inches to under an inch. Also shot some 90 tnt loads of mine and those were under half inch 3 shot groups. Chamber is definately tighter as I was getting some pressure signs that do not show up in my BHW barrel build.
Lightweight barrels really benefit from being free floated.
Comment
-
-
Originally posted by joedirt199 View PostOk so an update on this build and accuracy potential. I was getting large groups 2-3" with its current setup, plastic magpul handguard. Saw ALG had basic free float tubes on sale for $50 and decided to switch up to free float the lightweight barrel. Also found a used bcm upper receiver and am familiar with their tighter tollerences for the barrel extension area. The alexander arms receiver was very loose and required a lot of green loctite to tighten things up.
Got the barrel and new free float handguard mounted up. Bore sighted at 50 yards and was surprised no adjustment was needed to zero. Groups went from couple inches to under an inch. Also shot some 90 tnt loads of mine and those were under half inch 3 shot groups. Chamber is definately tighter as I was getting some pressure signs that do not show up in my BHW barrel build.
Lightweight barrels really benefit from being free floated.
Good job on the groups sir.
Comment
-
-
Nice job. I always free float the barrel. As mentioned, start with factory loads. Once you know it will shoot well, then develop your load.
I have one of their 16" LW barrels from about 4 years ago. SS, fluted, duracoat. It is a straight shooter. I have managed several 5 shot groups under .75" with factory SST's. It also does well with Federal Fusions.Last edited by 1075 tech; 09-05-2018, 09:47 AM.
Comment
-
-
16 inch AA lite barrel today.
Red dot 50 yards PF loaded 100 grain NBT ammo.
3 rounds to find bull and then 15 round rapid fired group.
Good enough for meAttached Files
Comment
-
Comment