20" 204 RUGER Stainless Heavy Barrel AR15 Rifle Upper Assembly with 15" Rail and A2 Flash Hider
The 20" 204 Ruger cartridge is very accurate and efficient, producing consistent 1/2 MOA groups at 100 yards. The advantage of the .204 Ruger is that it achieves this with less powder, less recoil, and less heat than the larger cartridges. The small caliber, light projectile, and low recoil make the 204 Ruger an ideal varmint round.
- 20" 204 RUGER 416R Stainless Heavy Contour Barrel with 1x12 Twist and 1/2x28 Threads.
- Mil-Spec 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" Narrow Profile Free Float Rail machined from 6061 T6 aluminum. Very comfortable and very light weight. Your choice of M-LOK or KEYMOD 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.
- AR15parts will customize (to your specificaions in the drop down menu) your AR15 Upper with the Rail Type (M-LOK or KEYMOD), a Magazine or two, one of our High Quality Bolt Carrier Groups, and your choice of 5 different Charging Handles.
This upper assembly will fit all standard AR15 lower receivers.
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.
ReviewsJosh CunninghamOnce everything was assembled it had a tight fit and cycles smoothJason Hinson
It’s Sexy!I have not yet mounted a scope or fired a shot yet but the order came on time and it appears to be good quality.........it’s a truly handsome and functional upper. Look forward to seeing how it performs.Thomas Brown
New to 204My first 204 Ruger , very impressed to say the least , had no idea it would be this accurate with 32 grain ammo off a bag at a hundred yards can't wait to get to the range and see what it will do further out , and thanks for the quick shipping, Tom .....Michael Ridgeway
Great shooterRecieved the upper 2 days after order was placed. Fit and finish is great. Shoots bergers at .789 4shot group at 100yds.Anthony Vandenbosch
Great purchaseThis upper surpassed my expectations by a mile! Fit and finish was great! The thing shoots .5 moa all day and feels great! I plan to purchase again from ar15part.com forsure ! I couldn't be happier.B. S.G.
Ruger 204 stainless steel 20" barrelRecieved the upper I ordered with all the right parts. Assembled it on my lower and tested it out. Works great, shoots straight. No issues whatsoever.Brian
20" 204 RugerThis shoots great, I would definitely purchase again! I only have 12 rounds through it, but extremely accurate. If you are looking for a excellent .204 upper, this is the one.Randy England
204 Ruger stainless barrellooks great fit my lower great fast shipping very happy . Haven't had chance to shoot it yet.Rod Tuft
Smooth, accurate and great fitSo smooth I didn't think it cycled the first time I fired it. Then I saw the empty case at my feet! 5 shot group 100yds under 1" (4 in one hole). matched up to lower perfectly. Can't wait until the 243s get back in stock for my deer gun build.Kristopher George
Great serviceSuper fast shipping and great service
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DetailsCurrent Stock: 190SKU: UA20R20SS12HC28R_15ML00_A2UPC:Availability: Usually Ships in 24 HoursOld SKU: 20204SSU1x12EXRL