Results 1 to 16 of 16

Thread: Alexander Arms 10.5" Upper

  1. #1
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87

    Alexander Arms 10.5" Upper

    I've been looking at these for a while and think I'm gonna pull the trigger. With the current sale $619 + free shipping I think it's a good deal for a reputable NFA Grendel upper. Should be good for deer/hogs out to 200 yards, and will ride comfortably in the UTV loaded with cheap Wolf ammo for general blasting. I have an Omega in NFA jail and a SBR lower waiting on stamp.

    Anybody else looking at the AA 10.5" upper? I doubt anyone has shot one, pretty new.

  2. #2
    There's a couple out there. For years, AA had what they called their "tactical" line, sort of M4 and Mk18 clones, but then they dropped that line. So there's a few out there — and it's good to see the SBR back. One guy in West Virginia shot a nice 10 pt buck a while back with his with a suppressor.
    :: 6.5 GRENDEL :: Make ARs Great Again ::

    :: I Drank the Water :: Revelation 21:6 ::

  3. #3
    Unwashed
    Join Date
    Mar 2017
    Posts
    12
    I have 2, both on very similar builds. They're great uppers. Personally, I'd grab one now w/the existing deal. They might even have a few left in stock (I waited over a year for both of mine).

    Here's a (poor) pic of one of them. Quick rundown on the build;

    - Six Sigma Arms Lower
    - AR Gold trigger @ 2.5lbs
    - Magpul MOE grip
    - Shockwave Blade w/QD
    - 10.5 AA Upper
    - PRI Charging handle
    - PRI QD sling mount
    - Leupold Mk 4 IMS
    - Leupold VX-6 2-12x42 CDS FD4

    Mainly built these for hunting so I don't have a muzzle device attached at the moment. Will likely mount a simple flash hider though.

    IMG_2271.JPG

  4. #4
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87
    Thanks for the pic. Looks handy for sure. How do you like the handguard? Seems perfect for cold weather hunting. How has accuracy been with factory ammo? I have several cases of Hornady Amax and SST.

  5. #5
    Unwashed
    Join Date
    Mar 2017
    Posts
    12
    Quote Originally Posted by ccasanova View Post
    Thanks for the pic. Looks handy for sure. How do you like the handguard? Seems perfect for cold weather hunting. How has accuracy been with factory ammo? I have several cases of Hornady Amax and SST.
    I really like the AA hand guards. They're really light weight which is great, especially for my kids, and I like how easy it is to swap on/off rails as needed. They also have a slightly slimmer profile than the PRI hand guards (which has been my go-to for a number of years now). I don't like how there is no way to get them "smooth" though. Even if you pull the button head screws out, the female side protrudes from the fiberglass just a touch which is a bummer.

    I just got these a few weeks ago so I haven't had much of an opportunity to run them through their paces. My hunting load of choice in my other Grendel's is the 120g TSX and that looks like it should work just fine in these as well. Initial results have been sub-inch out to 100y. I'm looking forward to stretching out the range a bit, hopefully sometime soon.

  6. #6
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87
    My only holdup is lack of adjustable gas block, because I will be shooting suppressed. I think I'm gonna go for it though.

  7. #7
    Warrior
    Join Date
    Sep 2014
    Location
    S.E. KC, MO
    Posts
    192
    Quote Originally Posted by ccasanova View Post
    My only holdup is lack of adjustable gas block, because I will be shooting suppressed. I think I'm gonna go for it though.
    IIRC from my conversation with my gun writer friend who had a rather lengthy discussion with AA, AA only uses buffers and springs to run reliably both suppressed and non-suppressed.

  8. #8
    Unwashed
    Join Date
    Mar 2017
    Posts
    12
    Quote Originally Posted by explorecaves View Post
    IIRC from my conversation with my gun writer friend who had a rather lengthy discussion with AA, AA only uses buffers and springs to run reliably both suppressed and non-suppressed.
    Correct, they do not advocate using anything other than standard weight buffers and springs. Suppressed/non-suppressed is part of the reason for that.

    FWIW, we usually buck that trend and install H2 buffers in all of our builds, Grendel's included (we're an authorized AA dealer).

  9. #9
    whats an h2 buffer??

  10. #10
    Chieftain
    Join Date
    Mar 2011
    Location
    SE Il
    Posts
    2,014
    Different buffer weights have been used over the years in AR-15 rifles and carbines. The heavier buffers were introduced to help functioning with shorter barrels where there was burst or full auto capability. The heavier buffer helps to slow down the cyclic rate and helps control bolt bounce.

    Here is a list of the common buffers and weight.

    Carbine 3 oz

    H 3.8 oz
    H2 4.6 oz
    H3 5.4 oz
    Rifle 5 oz

    Spike's Tactical also sell

    ST-T1 3 oz
    ST-T2 4.1 oz
    ST-T3 5.4 oz

    Pistol calibers like 9 MM or 45 ACP usually have heavy buffers, around 8 oz or more. Pistol caliber AR-15's are generally blow back actions and require a heavy buffer.
    Last edited by VASCAR2; 04-26-2017 at 11:35 PM.

  11. #11
    thank you vascar2 for your answer. but that opens another question. what buffers are preferred for short 556, long 556, short blkout, long blkout, short (12") 6.5g, 16" 6.5g???

  12. #12
    Chieftain
    Join Date
    Mar 2011
    Location
    SE Il
    Posts
    2,014
    There are varied opinions on the different buffers for the AR-15's. The buffer tube determines the buffer and spring. With a rifle length buffer tube use a rifle buffer with rifle spring. Many forum members like the JP Silent Captured Spring/Buffer. With Carbine buffer tube whether mil spec or commercial use a carbine spring and carbine buffer. Other buffers are popular but I've had no issue with the standard 3 ounce carbine buffer. H buffers and H2 buffers are popular with AR-15 carbines. Some barrels have large gas ports (like AR Stoner 18" 6.5 Grendel II) and a H2 buffer will help reduce the effects of being over gassed.

    Some people will use heavier buffers and/or buffer springs when using suppressors to improve reliabilty. I personally think an adjustable gas block is a better way to adjust a rifle/carbine for use with a suppressor. For people who don't want to swap out the gas block different buffers and springs might be a solution. I have 2 16" 5.56/223 AR-15 and one 20" AR-15 and I never had a reason to change the buffers. One 16" 5.56/223 is carbine gas the other is a midlength and I don't ever remember having a malfunction with any of my three 5.56 AR-15's. I came from a LE background and I tend to keep my rifles clean and lubed.

  13. #13
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87
    Quote Originally Posted by VASCAR2 View Post
    I personally think an adjustable gas block is a better way to adjust a rifle/carbine for use with a suppressor.
    I agree, and that is my only hang up with the AA vs gathering parts on my own. Guess I could always change later if needed. When the can clears I'm sure it will be attached 99%.

    I have A5 lowers with multiple weight buffers as well as carbine with multiple weighted buffers to try with it.

    Each of my uppers runs/feels best with a particular lower setup, but even then, has been made better with an adjustable gas block.

  14. #14
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87
    Well, I put my order in tonight. Last day of the sale. Gotta get a pistol lower until my SBR stamp comes in.

  15. #15
    Bloodstained ccasanova's Avatar
    Join Date
    Mar 2016
    Location
    Louisiana
    Posts
    87
    I had posted pics a while back of my 11" AA upper, but they were lost during the last forum update. I finally picked up a Vortex Gen2 Razor 1-6 and Geissele Super Precision 1.93 mount and dialed in some factory Hornady 123gr SSTs this afternoon. First 2 shots were low right and out of this pic. Made an adjustment then shot the 2 to the right. One last adjustment then the final 3 in the center. This was only at 50 yards, but propped on a pillow across my patio table (crappy setup), so I'm pretty happy with that. If it ever stops raining I'll get to the range and stretch her out. Should be a hog/deer killing machine.

    IMG_5110.JPG

    I'll test out some factory Hornady 123gr Amax and Wolf 100gr steel case asap.

  16. #16
    Man you guys have me wanting to build a Grendel pistol... that looks so damm handy and fun!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •