Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M3 AR-10/SR25 Rifle Magazine, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MGMPI292BLK-25RD
Magpul Industries PMAG GEN M3 AR-10/SR25 Rifle Magazine, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MGMPI292BLK-25RD
(17)
List: $24.95 $22.45 Save Up to 10%
Best Rated Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Rifle Magazine, .308 Win/7.62x51mm, NATO 20 Round, Black, 1 Pack, Polymer, MGMPI291BLK-20RD
Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Rifle Magazine, .308 Win/7.62x51mm, NATO 20 Round, Black, 1 Pack, Polymer, MGMPI291BLK-20RD
(21)
List: $22.95 $21.75 Save Up to $1.20
Best Rated Magpul Industries PMAG 20 LR/SR Gen M3,, .308 Winchester,, 20 Round Rifle Magazine,, Medium Coyote Tan,, 1 Pack,, MAG291-MCT-20RD
Magpul Industries PMAG 20 LR/SR Gen M3,, .308 Winchester,, 20 Round Rifle Magazine,, Medium Coyote Tan,, 1 Pack,, MAG291-MCT-20RD
(21)
List: $22.95 $21.75 Save Up to $1.20
Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Detachable Rifle Magazine w/Capacity Window, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MAG577BLK-25RD
Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Detachable Rifle Magazine w/Capacity Window, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MAG577BLK-25RD
(1)
List: $24.95 $22.45 Save Up to 10%
Best Rated Amend2 Mod-3 Magazine, Short-Action AICS, 7.62x51mm NATO/.308 Winchester, 12 Round, Black, 1 Pack, Polymer, SAAICSBLK12-12RD
Amend2 Mod-3 Magazine, Short-Action AICS, 7.62x51mm NATO/.308 Winchester, 12 Round, Black, 1 Pack, Polymer, SAAICSBLK12-12RD
(6)
List: $32.99 $29.99 Save Up to $3.00
Amend2 Kinetic Development Group Mod-3 Magazine, KA2-20 SCAR 17/17S/20/20S, 7.62x51mm NATO/.308 Winchester, 20 Round, Black, SCARMOD3BLK20-20RD
Amend2 Kinetic Development Group Mod-3 Magazine, KA2-20 SCAR 17/17S/20/20S, 7.62x51mm NATO/.308 Winchester, 20 Round, Black, SCARMOD3BLK20-20RD
(2)
List: $32.99 $29.99 Save Up to $3.00
Warpath Coffee Mariner's Blend Ground Coffee, Dark Roast, Black, 12 Ounce, 104, 104
Warpath Coffee Mariner's Blend Ground Coffee, Dark Roast, Black, 12 Ounce, 104, 104
(3)
List: $19.99 $14.95 Save Up to 25%
Best Rated TRYBE Defense 16 in Wylde Government Profile AR Carbine Barrel, .223 Wylde, 1/2X28 Threads, Nitride, Black, BARCARBT16223
TRYBE Defense 16 in Wylde Government Profile AR Carbine Barrel, .223 Wylde, 1/2X28 Threads, Nitride, Black, BARCARBT16223
(23)
List: $172.99 $119.99 Save Up to 31%
Free 2 Day Shipping TRYBE Defense Milspec Complete AR10 .308 Bolt Carrier Group BCG, Nickel Boron, BCG308-NB
TRYBE Defense Milspec Complete AR10 .308 Bolt Carrier Group BCG, Nickel Boron, BCG308-NB
(74)
List: $214.99 $169.99 Save Up to 21%
Blazin' Deal TRYBE Optics DiMA1000 Laser Rangefinder with Mount, Black, TROLRF
TRYBE Optics DiMA1000 Laser Rangefinder with Mount, Black, TROLRF
(6)
List: $764.99 $615.34 Save Up to 20%
Questions & Answers
Will this fit are precision m5 Dpms standard complete lower Expert Answer

The Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper is designed to be used only with RRA LAR-8 lower receivers. Parts, pieces, and accessories manufactured by RRA and its vendors for the RRA LAR8 platform are only to be used on the RRA LAR-8 and NOT on any other model/platform made by any other manufacturer.

by Ethan, Gear Expert, August 14, 2023
Customer Reviews
Most Recent Reviews
ROCK RIVER ARMS UPPER by Certified buyer, June 28, 2023
The RRA Upper is fantastic. However what OpticsPlanet leaves out in the description is extremely important because the RRA Upper ONLY fits a RRA Lower and no others. Therefore, I had to return it and endure the process
Read 1 Review
Caliber:
.308 Winchester, 7.62x51mm NATO
Overall Length:
24 in
Barrel Length:
16 in
Barrel Profile:
Standard
Gas System Length:
Mid Length
Barrel Twist Rate:
1-10
Threads per Inch:
5/8x24
Handguard Type:
Free-Float
Muzzle Device:
A2 Flash Hider
Finish:
Anodized
Color:
Black
Condition:
New
Gas Block Journal Size-Diameter:
.750 in
Handguard Length:
11 in
Included Accessories:
None
Weight:
5.85 lb

Code: 1WN-UFH-UP25-308A0375

MPN: 308A0375

UPC: 842834103232

List: $645.00Save $45.01
$599.99

Buy Together and Save

OP Bucks$12.00

ATTENTION! We currently do not ship this product to AK, CA, HI, IL, NY, WA, P.O. Boxes, and U.S. Territories. Please see our policies for more information.

Product Info for Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper

Meant to be a very good product for almost anybody, we're positive you'll love the Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper.image

Formulated by using several of the most extremely robust and long lasting substances in existence, these AR15 Upper Receivers from Rock River Arms provides you with a product that will give many years of consistency.

Rock River Arms has been developing superior quality products for a number of years, and the Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper is their particular means of showing you just how much they care.

Right here at OpticsPlanet, we ensure that it is our responsibility to purchase the perfect solution for all of your requirements, and featuring the Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper is a thing that we are delighted to offer.

WARNING: California`s Proposition 65

Specifications for Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper:

Manufacturer: Rock River Arms
Caliber: .308 Winchester, 7.62x51mm NATO
Overall Length: 24 in
Barrel Length: 16 in
Barrel Profile: Standard
Gas System Length: Mid Length
Barrel Twist Rate: 1-10
Threads per Inch: 5/8x24
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Anodized
Color: Black
Condition: New
Fabric/Material: A2 Thermo Mold
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 11 in
Included Accessories: None
Barrel Material: Chrome Moly
Bolt Carrier Group Included: COM-SPEC
Charging Handle Included: COM-SPEC
Weight: 5.85 lb
Magazine Included: No

Package Contents:

  • Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper
  • Bolt Carrier Group
  • Charging Handle Assembly

Rock River Arms Mid-Length A4 .308/7.62X51mm NATO Completed Upper Orderable Models

List of Orderable Models

  • Rock River Arms Completed Upper Receiver, Mid-Length A4, .308/7.62X51mm NATO, 16 Inch Barrel, 1-10 Twist, 5/8-24 Thread, Mid-Length Handguard, A2 Flash Hider, Black, 308A0375 , MPN: 308A0375 , UPC: 842834103232 , Code: 1WN-UFH-UP25-308A0375
Compare (0)