New Guy Here

[POG1986]

Hey,

New guy and I am putting a build together. Below is parts that I pulled together and where I found them. I would love feedback on it and point out any parts that might be wrong. I am also am putting in what the guy that built my brothers AR said. It sounds off, so please let me know if I am wrong or right about what he said. So without further reading her she is:

PARTS Company Internet Address
G4 Left Handed Side Charging Upper Receiver Gibbz Arms https://gibbzarms.com/product/g4-left-h ... -receiver/
BCA .223 / 5.56 NATO Left Handed Side Charging Bolt Carrier Group Bear Creek Arsenal https://www.bearcreekarsenal.com/bolts/ ... 56-bcgl-15
AR-STONER Barrel AR-15 Pistol 300 AAC Blackout Medium Contour 1 in 8" Twist Chrome Moly Melonite Length 16 Inch MidwayUSA https://www.midwayusa.com/product/22283 ... y-melonite
Aero Precision Low Profile Gas Block - .750" - Set Screw Style Primary Arms.com http://www.primaryarms.com/aero-precisi ... aprh100122
Expo Arms Stainless Steel Gas Tube - Pistol Length Primary Arms.com http://www.primaryarms.com/expo-arms-st ... ol-xp-plgt
SureFire ProComp 762 Muzzle Brake - 5/8x24 Primary Arms.com http://www.primaryarms.com/surefire-pro ... -762-58-24
G4 Enhanced Cam-Pin Gibbz Arms https://gibbzarms.com/product/enhanced-cam-pin/
15" Echo Keymod Hand Rail Midsouth Shooters https://www.midsouthshooterssupply.com/ ... -hand-rail
AFG-2® - Angled Fore Grip COLOR Olive Drab Green Magpul https://www.magpul.com/products/afg-2
COMMAND ARMS ACC - AR-15 STOCK COLLAPSIBLE COMMERCIAL Brownells https://www.brownells.com/rifle-parts/s ... 67728.aspx
AR15 6 Position Mil Spec Carbine Rifle Buffer Tube Kit 15 Sports https://15sports.com/ar15-6-position-mi ... 5%20buffer
Ambidextrous Sling Adapter End Plate w/ Triple Loop 15 Sports https://15sports.com/ambidetrous-sling- ... ple%20Loop
Aero Precision | AR15 Stripped Lower Receiver, Special Edition: FREEDOM Patriot Defense https://patriotdefense.com/product/aero ... r-freedom/
Odin Works Ambidextrous Modular Safety Color Black Odin Works https://www.rainierarms.com/odin-works- ... lar-safety/
Phase 5 Tactical Extended Bolt Release V2-308 DPMS Phase 5 https://www.rainierarms.com/phase-5-tac ... -308-dpms/
Troy Ambidextrous Magazine Release Troy Arms https://www.rainierarms.com/troy-ambide ... e-release/
JMT Saber Single Stage Drop In Trigger W/ Anti-Rotation Pins JMT Saber https://www.rainierarms.com/jmt-saber-s ... n-trigger/
Magpul MOE Grip MAGPUL https://www.rainierarms.com/magpul-moe- ... -category2
Ozark Armament Flip Up Backup Battle Sights Picatinny Mount AR Pattern Flat-top Upper Co-Witness Iron Sights BUIS Ozark https://www.amazon.com/Ozark-Armament-P ... ghts&psc=1
Monstrum Tactical S232P 2x Magnification Prism Scope Monstrum https://www.amazon.com/Monstrum-Tactica ... ights&th=1
This is what my brothers AR builder said to my laundry list above:

Jim looks like an interesting rifle. - you've pulled out all the stops with this one! Is this for you? You know it's considered an SBR with the shoulder stock and therefore will require a tax stamp.
My concern about building it myself is you've got a short barrel and gas system, a carbine length buffer, and a left side charging handle - all very non-standard stuff. I would be concerned about my ability to get the gas system tuned right. Also left side charging receivers normally require some gunsmithing on the bolt to get them to feed correctly. I assumed you picked 300 Blackout and the short barrel because you're contemplating putting a suppressor on it at some point?

Well, there it is laid out and open. I am an Ambi shooter and I am tired of brass flying into this beautiful old scruffy cranky face of mine. I am only thinking about my non-existent modeling career that has yet to take off. Yes I would love feedback, but genuine and not a its good but do it this way type of feedback-remember its my boomstick so there.

Again thanks for your feedback.

Send It Loud and Pround,
The new guy

[cdakers]

My thoughts would be 16" barrel means it is NOT an SBR and doesn't require a stamp. Not sure why the 'ar builder' said it was. You have selected a commercial sized stock and a mil spec buffer tube - they should both be either commercial or mil spec. If it were me, I would use a H2 buffer and perhaps an adjustable gas block. May not be necessary, but could be helpful in tuning.

[plant.one]

cdakers nailed it with the buffer


pistol gas = h2 buffer
carbine gas = carbine buffer

both use standard spring.

[POG1986]

Okay, so swap out the buffer system with these puppies (see below). I am still getting pushback from my brothers builder which makes me believe that he is unwilling to take on the build and now I need to find me a person in the Dallas Fort Worth area. Any recommendations?


PSA PA10 Buffer Tube Assembly - 506798
Syrac Ordnance GEN II Adjustable Gas Block .750" Set Screw, Black

[golfindia]

Using a 308 spring and buffer on an AR15 probably isnt a good idea.