Building on an AR platform is a serious undertaking, but building on an upper receiver that’s already assembled takes a lot of stress off of your gear. These AR15 Handguards & Forends from Aero Precision simplify the build process by including everything you need to install the receiver and headrest assembly but still leave enough room for a good portion of your rail. You can install this kind of versatility onto an AR platform by adding this Aero Precision M5 20in .308 SS Complete Upper Receiver w/ ATLAS S-ONE Handguard onto your current upper receiver. This combination is great for those who want to build a more compact upper for their current setup or for those who already have a handguard they don’t absolutely love. Customize your gun with this versatile Aero Precision M5 Complete Upper .308 Stainless Steel Receiver w/ ATLAS Handguard that will dominate competitions and range visits alike. Specifications for Aero Precision M5 20in .308 SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard: Manufacturer: Aero Precision Cartridge: .308 Winchester Overall Length: 30 in Barrel Length: 20 in Gas System Length: Rifle Length Barrel Twist Rate: 1-10 Threads per Inch: 5/8×24 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Gun Model: M5 Condition: New Fabric/Material: 416R Stainless Steel Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Gun Rail: Picatinny Gun Make: Aero Precision Included Accessories: None Barrel Material: 416R Stainless Steel Weight: 70 oz Magazine Included: No Mount Type: M-LOK Caliber: .308 Caliber Country of Origin: USA Features of Aero Precision M5 20in .308 SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard M5 Assembled Upper Features: Forged from 7075 T6 aluminum M4 Feedramps .2795 takedown pin holes Laser engraved T-marks DPMS High Profile (.210) Tang) Includes port door and forward assist ATLAS S-ONE Handguard Features: Front and rear picatinny rail Eliminated center of top rail for weight reduction Indexing grooves in 12:00 position for positive grip control Quick disconnect sling socket at the 3, 6 and 9 o’clock positions Compatible with low profile gas blocks 1.5in Inside diameter 1.75in Outside diameter Compatible with AR-308 Upper Recievers with a thread pitch of 1-7/16 x 16 along with a DPMS High Profile (.210) Tang Rail Learn More about our NEW ATLAS S-ONE Hanguards 20in .308 Stainless Steel Barrel Features: Twist: 1 in 10 Threading: 5/8 x 24 Material: 416R Stainless Steel Finish: Bead Blasted Gas Block Journal: .750 Gas System Length: Rifle Length Weight: 54.24 oz DPMS Barrel Extension HP and MPI Tested Package Contents: Aero Precision M5 20in .308 SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard
3 reviews for Aero Precision M5 20in .308 SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard
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Pengyu –
This stupid upper gave me a 6 MOA group at 100 yard, as same as my Mossberg 590.
georgiavol –
I purchased this upper and fired it for the first time recently. After 8 rounds, I experienced significant deviation in accuracy, followed by two failure to extract events. After a total of 12 rounds, I ceased firing.Back at the shop, here is what I found:1. The barrel nut had a measured break torque of 10-12 ft lbs (Aero spec calls for 60 ft lbs). Wear was evident on the cerakote’d thread surfaces of the receiver, with no evidence of anti-seize being used. Cerakote on threads is a very big no no. Additionally, double stacked shims were improperly used to align the barrel nut along with evidence of uneven shimming.2. The barrel gas block port was incorrectly sized along with improper gas block assembly. Specifically, the gas port was measured at 0.081", which is incorrect for a 20" 1:10 rifle barrel. For a 20" 1:10 308 WIN barrel, the port should have been 0.093-0.096". My guess, the person drilling the barrel didn’t realize the barrel was not 16/18”, for which the 0.081” is appropriate. Additionally, upon inspection, the gas block screws were installed hand tight without threadlocker or dimpling.3. Upon inspection, the barrel chamber showed machining marks or other surface defects from nitride treatment and/or factory polishing. This is further evidence of poor quality control during the assembly and testing process.
beeery –
Aero uppers dont come pre-assembled and thats how you can clearly see the other two reviews were bs for some reason