Rock River Arms AR-15 4150 Barrel NiB Bolt AR 15
Colt 6920 Windham Bushmaster DPMS RRA POF Barrett
NorthStar Sporting Goods A+(595)
Factory New Condition
FFL is required
Current Bid
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0 Bids Bid History
Time Left 15 min rule
Item has Ended
8/25/2017 8:18 PM
Item 684399053
Location Farmington, MN 55024
See Item Description
No international shipments
Payment Visa / MasterCard, Discover, USPS Money Order, Money Order, Certified Check
Checkout Yes
Sales Tax
Seller must collect sales tax from the following states:
MN 7.125%   
Inspection/ Return Policy

The seller of this item assumes all responsibility for this listing. You must contact the seller to resolve any questions or concerns before placing a bid. Payment must be made using U.S. dollars ($) unless otherwise stated in the listing. Firearms may only be shipped to a licensed dealer (FFL Holder). Some listed items may not be legal in every state. Complete your purchase within the law.

Please read the Item Characteristics for important listing details.


If you've been looking for a gas impingement AR with all the right things but at a mid-level price, this Rock River AR is for you!

This AR started life as a new Rock River Entry Tactical which is a great place to begin a custom build considering the F.B.I. and U.S. Drug Enforcement Agency equip their agents with Rock River AR’s.

Next we purchased 1 in 7” twist 4150 Chrome Moly Vanadium (machine gun rated) Performance Series barrels and gas tubes from Ballistic Advantage. These barrels and gas tubes (see photo 10 - note dark Melonite finish on gas tube) feature a QPQ Melonite corrosion resistant finish inside and out. Other barrel features include FailZero Nickel Boron (NiB) Coated M4 Feed Ramp Extension and HP / MPI testing.

What is key about these barrels and gas tubes is the Melonite treatment. This is not a chrome lining, which is typically applied in various thicknesses and causes accuracy issues, but a treatment that penetrates below the surface of the metal in a uniform thickness. Melonite is superior to chrome lining in lubricity, corrosion resistance, and its ability to be applied evenly. If you’ve never heard about QPQ or Melonite treated barrels, just do 15 minutes of research on the topic and you’ll see for yourself.

We also purchased FailZero NiB coated M16 bolt carrier groups machined from 8620 steel from Ballistic Advantage as well. Features include 5.56 mm shot peened bolts machined from 9310 steel, forged gas keys that are properly staked, tool steel extractors, mil-spec extractor springs with black insert and Viton O-rings, Grade 8 hardware, HPT / MPI testing, and NiB coated carriers, gas keys, cam pins, bolts, and extractors coated inside and out. The bolt carrier groups were also test fired to ensure proper function.

Assembly of these high tech uppers was completed by one of the longest operating gun shops here in the upper Midwest. They employ 7 fulltime gunsmiths and are a factory authorized repair center for 9 different manufacturers. Their name and website is available upon request. To wrap up this build each AR was test fired as well.

And lastly………for those of you that are into “prepping”, having a gas impingement AR is the right way to go! Gas impingement AR’s have fewer parts, are more accurate than piston AR’s, and have successfully served our military in many theaters of operation for numerous years. Short of military / law enforcement auto sears, every part in this AR should be interchangeable with gas impingement AR’s fielded by millions of people. If the “you know what” is going to hit the fan, you definitely would want an AR that could be maintained and/or repaired under any conditions.

Additional features include.........

Hogue grips, two stage trigger, A4 upper receiver with detachable handle, side mount sling swivel near front sight, 16" M4 profile barrel with 1 in 7" twist, and RRA Tactical CAR stock. Includes one 30 round mag, RRA rifle case, and all factory provided paperwork including manual.

Don’t miss out on this opportunity!


Doing business with NorthStar Sporting Goods, LLC is easy……….following these 4 steps will ensure a smooth transaction, fast shipment, and positive feedback from us on GunBroker!

#1 FIND A TRANSFERRING DEALER………….if you already have a transferring dealer, please skip this step. If you don’t have a transferring dealer, check out GunBroker’s “Find a Transfer Dealer” service listed under the “For Buyers” tab. If you need help, please contact us.

#2 COMMUNICATE WITH US……….please make sure all your contact info in GunBroker is correct because if you are a winning bidder, we’ll email you an invoice within a day or so of the auction closing. Please let us know that you’ve received the invoice. If we don’t hear from you within a couple of days of auction close, we'll call you.

#3 ASK YOUR TRANSFERRING DEALER TO SEND THEIR FFL TO US………… Federal law is very clear when it comes to the proper way a FFL needs to be certified by the holder and how it is to be properly transmitted to us. Basically the FFL needs to be legible, not expired, and all fields need to be filled out. Any deviation from federal law or BATF guidelines WHATSOEVER may result in delays with processing your order. As soon as you become a winning bidder, ask your dealer to either fax or email a LEGIBLE copy of their license to us. Our fax number is 952-953-0052 and our email address is

#4 PROMPTLY PAY FOR YOUR PURCHASE………….we accept mailed money orders and cashier’s checks made out to “NorthStar Sporting Goods, LLC”. We also accept Visa, MasterCard, and Discover with a 3.95% fee added to your invoice. If you want to pay with a credit or debit card please call us and we’ll transact over the phone. Sorry no personal or business checks are accepted. Please note: Sales tax (for MN residents) and shipping / handling charges are above and beyond the price of the item.

We don’t mean to be pushy but if we don’t receive payment within 7 days of auction close, the item will be relisted, negative feedback will be posted, and a non-paying bidder report will be filed with GunBroker. We understand things happen or folks change their minds but this is the only way GunBroker will refund our final value fee and allow us to relist the item without paying for another auction listing.


We've been a licensed firearms dealer since 1988 and we guarantee the description and photos accurately depict this firearm. Even though we sell firearms to the general public, we are not a retail business in the classic sense. Our prices are about 10% over wholesale so please don’t ask for a deal or try to negotiate with us. Feel free to check out our great selection of firearms and competitive prices at Good luck bidding on this firearm! Please note that NorthStar Sporting Goods reserves the right to end this auction at any time. If any questions, please contact us at or 952-270-5844.

If you have any problems with a firearm you purchase from us, we’ll help you contact the appropriate factory authorized repair center. Sorry we are not insured to do any gunsmith work nor do we have the required parts, tools, or proper skill set to effect repairs.

Sorry we don't do trades or lay-a-ways. Just too many problems to list plus trades make us do twice the work for about the same money earned.

FILLING YOUR ORDER……………..we normally ship handguns via USPS Priority Mail and long guns via UPS Ground. Since it is a violation of federal law to ship handguns UPS Ground or FedEx Ground, we will not ship handguns in this manner under any circumstances. UPS normally ships handguns next day air but they will ship two day air if you have an account set up with them and we do. Unless you work for certain firearm manufacturers or distributors, FedEx only ships handguns overnight next day and they typically charge anywhere from $80 to $120 for this service. If your transferring dealer insists upon only accepting UPS or FedEx handgun shipments, be prepared to pay for it. My advice is to find another transferring dealer because there is absolutely no reason why they can’t accept a handgun shipment via USPS or long gun shipment via UPS Ground. We charge $25 to ship handguns and $35 to ship long guns anywhere in the lower 48 states. A tracking number will be emailed to you same day as shipment. If you want overnight shipping or insurance just let us know and we’ll have to quote you a price.

ATTENTION CALIFORNIA BIDDERS.........We are registered in the CA Department of Justice (DOJ) database and happy to do business with you. PLEASE REMEMBER – IT IS YOUR RESPONSIBILITY TO CHECK WITH THE CA DOJ TO SEE IF THIS FIREARM IS LEGAL IN YOUR STATE. DO NOT BID ON THIS ITEM UNLESS YOU ARE 100% SURE IT IS LEGAL. We've made several sales to CA bidders and the process is no big deal as long as your transferring dealer provides us their CL number in addition to their FFL. If the firearm comes with a mag that holds more than 10 rounds, we'll also need your transferring dealer's high capacity mag permit as well. If your transferring dealer doesn't have a high cap mag permit, it's no problem for us to ship the firearm without the mag as long as that particular model is legal in CA. If the firearm is an "off-list" assault weapon, we are familiar with the required process to ship the firearm to your transferring dealer. Please note that we are not insured to repair or modify firearms so we will not be able to install any parts to make a firearm legal in CA. And lastly, if you are unsure about any of these issues, the best folks to ask are your transferring dealer or the CA DOJ. You can also check out the CA DOJ’s website at Please feel free to contact us if you have any other questions.

ATTENTION LOCAL CUSTOMERS………… Please note we are not a “bricks and mortar” store front. All visits by customers must be made by appointment only. Also note that any inventory displayed by NorthStar Sporting Goods, LLC on GunBroker or any other internet site is actually located in an off-site secure storage area. If you wish to look at a particular firearm, please set up an appointment and we’ll make the firearm available for inspection. Please note that local walk-in customers transacting on GunBroker may be assessed an order processing fee. Please call us if any questions regarding this fee. To maintain a safe and secure business environment, NorthStar Sporting Goods, LLC uses state of the art electronic surveillance / alarm equipment and employees are concealed carry permit holders.
Seller provided no "Additional Terms of Sale"
Rock River Arms
5.56mm NATO
Barrel Length
16 inch
Mfg Part Number