20" 308/7.62x51 Parkerized Heavy Barrel AR10/LR308 Upper Assembly with 15" M-LOK Rail and A2 Flash Hider
During the 1940s Winchester saw a market for a civilian model of the late T65 series designs and introduced the 308 in 1952. Since then, the .308 Winchester has become the most popular short-action big-game-hunting cartridge worldwide. The relatively short case makes the .308 Winchester especially well-adapted for short-action rifles. The .308 Winchester has slightly more drop at long range than the 30-06, owing to its slightly lower (around 30 metres per second (100 ft/s)) muzzle velocity with most bullet weights. Cartridges with significantly higher muzzle velocities, such as the 300 Magnum can have significantly less drop at long range, but much higher recoil. The relatively short case makes the .308 Winchester especially well-adapted for short-action rifles. When loaded with a bullet that expands, tumbles, or fragments in tissue, this cartridge is capable of high terminal performance.
- 20" 308/7.62x51 NATO 416R Stainless Heavy Contour Barrel with 1x10 Twist and 5/8x24 Threads. This barrel is made by ER Shaw who is well known for accuracy and quality
- AR10/LR308 Upper Receiver forged from 7075 T6 aluminum with forward assist and dust cover assembly installed. Hard coat anodized MIL-STD 8625 Type 3 Class 2
- 15" M-LOK Narrow Profile Free Float Rail machined from 6061 T6 aluminum. Very comfortable and very light weight. Your choice of M-LOK attachment points along the entire length at 3, 6, and 9 positions
- Hard coat anodized MIL-STD 8625 Type 3 Class 2
- 0.750" Low Profile Gas Block
- Rifle Length Gas System
- Mil-Spec A2 Flash Hider with crush washer
This item is "Firearm Parts", not a complete firearm (no serialized components). It will be shipped directly to you with no FFL transfer required.
You are responsible for knowing federal, state and local laws applicable to this item. AR15Parts.com reserves the right to not ship to addresses where it may not be legal to own this item.
ReviewsIsaiahI just recently bought this 20" stainless upper for one of my 80% builds and let me tell you it is WELL worth the money! Amazing A+ quality and the only thing that might have been better than this upper is the customer service I recieved. These guys at Ar15 are great to work with, I look forward to doing more business!JL125
Everything went greatOrdered an upper from this site. It came quickly and is a great upper couldn't ask for more. I tried a few other sites and got treated badly but this site worked great, happy as a clam.Joe Paolilli
Great serviceThe service and response time was great. Though at first I did have some confusion following the script to make the purchase, But I tried again an got it right. I like that fact the the product is sent discretely and not make as anything doing with firearms. I have to shoot this firearm, as I am still working on what sighting system that I want.Erin Wilkinson
I am impressedI finished the build and took it to the rainge last Saturday. It shoots very nice. Very consistent. When it came time to clean it afterwards this may have been the cleanest I have ever seen in a gun when I brought it home. To my mind that speaks volumes about the gas seals. If I could change anything I would have the dark earth foregrip, but that was out of stock and I did not want to wait.David Weatherston
2020Biden2020 brought a whole new level of gun buying. Of all the websites that I have ou headed many many many things from Ar15part.com is the ONLY company who answered and Phone call! Only ones who called back. That is phenomenal service and a good group of folks. Even if one guy can't get his colors right ;)Monte Wright
Pretty good executionVery clean assembly. Quickly noticed the muzzle break timing was way off (15-degrees). That made me question the rest of the build, so I thoroughly went over the upper but didn’t find anything else abnormal.Jeff
308 UpperGreat product. Fast delivery. Works greatBrian McAlister
308 upperMy purchase experience here at ar15part.com was about as good as it gets. Customer service was excellent, I had forgotten to check one of the options for the lower and within 4 hours customer service had emailed me about the error and I had the opportunity to give the information. Received the upper within in a week (Amazing!!!). Packaging was great and the upper is top-notch! Highly recommend you guys. Thank you ar15part.comErin Wilkinson
I am impressedThis shoots very nice. First 5 shots out into a 2 inch pattern with iron sights. I am sure I can do much better as I learn this upper and the rifle I built it into. When cleaning it I was in for another pleasant surprise. Very little carbon to clean.AJB
Even better than I expectedAwesome product - fit my jigged lower like a glove. Excellent customer service - shipped and rcvd lightning fast!
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DetailsCurrent Stock: 104SKU: UA30820SS10HC24R_15ML00_A2UPC:Availability: Usually Ships in 24 HoursOld SKU: 20308SS1x1015EXRLMLR