Ruger 16" AR15 5.56 Adjustable Rapid Deploy Rear Sight Rifle

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Ruger 16" AR15 5.56 Adjustable Rapid Deploy Rear Sight Rifle, Black - 8500


Quick Overview

SKU: 51029
UPC: 736676085002
MFR#: 8500
  • Model:  AR-556
  • Caliber:  5.56 NATO / .223 Rem
  • Capacity:  30 rounds
  • OAL:  32.25" - 35.50"
  • Height: 8.00"
  • Weight:  6.5 lbs
  • Barrel Length:  16.10"
  • Barrel Type: 
  • Thread Pattern:  1/2" x 28
  • Twist: 1:8" RH
  • Trigger Type:  Single-stage
  • Length Of Pull: 10.25" - 13.50"
  • Bolt Material:  9310 alloy steel 
  • Receiver Material:  7075-T6 aluminum forging
  • Receiver Finish:  Black; Type III hard coat anodized
  • Stock:  Black synthetic, collapsible
  • Front Sight: Adjustable Post
  • Rear Sight:  Adjustable Ruger Rapid Deploy
  • Includes: Ruger flash suppressor, (1) 30-round Magpul PMAG, (1) front sight tool





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The Ruger AR-556 is a standard gas impingement operated AR15 platform rifle featuring a milled gas block, located at a carbine-length (M4) position for improved balance and handling. Multiple attachment points include a QD socket and bayonet lug, for many sling and accessory mounting options. The AR-556 comes equipped with the Ruger Rapid Deploy folding rear sight which provides windage adjustability, and pairs with the elevation adjustable front sight for a solid, reliable aiming system. The six-position telescoping M4-style buttstock and Mil-Spec buffer tube allow the file to be properly sized for different shooters, or varying levels of outerware or defensive gear. Made from aerospace-grade 7075-T6 aluminum forging, the flattop upper receiver includes a forward assist, dust cover and brass deflector, and is Type III hard coat anodized for maximum durability. The medium contour cold hammer-forged barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning. The 1:8" twist rate stabilizes bullets from 35 to 77 grains, and the 5.56 NATO chamber allows the use of both 5.56 NATO and .223 Rem. Ammunition. M4 feed ramps provide improved operational reliability, and the matte black oxide finish reduces glare and provides corrosion resistance. A Ruger® flash suppressor is provided, and the 1/2"-28 threaded barrel allows for standard muzzle accessories to be installed. 


• Single-stage trigger provides durable and reliable fire control. The enlarged trigger guard is designed to allow gloved shooting

• Ergonomic pistol grip features an extended trigger reach for more precise trigger control

• Handguards are made from heat-resistant glass-filled nylon for shooting comfort and durability

• Six-position telescoping M4-style buttstock and Mil-Spec Buffer tube

• Shot peened and pressure (proof) tested bolt to ensure strength, structural integrity and durability

• Chrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provide exceptional resistance to hot gases. The gas key is staked so that it will not loosen after extensive firing. A matte black oxide finish on the exterior of the bolt carrier provides corrosion resistance

• Gas block features serations on the angled face, providing a low-glare surface

• Patent pending Barrel Nut and Delta Ring are designed for one person handguard removal and installation. The design accepts most standard carbine length handguards. The barrel nut uses a standard wrench and can be swapped with a Mil-Spec barrel nut if desired

• Rear sight can be folded out of teh way to make room for optics, but can be instantly redeployed if needed

• Front sight post is elevation adjustable, and a front sight tool is included

• The A2-style F-height allows co-witness with many optics

SKU: 51029
SKU 51029
Brand Ruger
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SKU: 51029

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5.0 / 5.0
2 Reviews
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1 Star
Great rifle for a great price!
saw this on sale for $459 with free shipping. I jumped on it. From time of order and when it arrived at my local FFL was less than a week. I have owned this rifle before and you cant beat it for the price. Just one thing when you first get it. Take it completely apart Clean that factory oil off (It was covered with tons of oil) and re oil it how you are suppose to.
October 25, 2017
All I have to say is WOW!
Got compliments on this rifle at the range my first time out with it. Sure I put some nice furniture on it but this girl right next to me was really into it I guess she was liking the way I was shooting. So I let her try it. For a girl to never shoot an AR and get center mass shots at 10 yards with open sights and not complain about kick or anything? That sounds like an easy one for me. The farthest I could shoot was 25 yds indoor range. Let me tell you it took a few clicks on the rear sight to get it locked but a full mag on a Shoot-n-c Target kid you not 3in average moa with a soft mag rest on the counter. I forgot to mention I switched out the trigger springs because I've done it before and I know it improves the results of your shooting. No fte no ftf so smooth 100 rounds. I'm very happy with the rifle and I would not expect anything less from a ruger. Perfect for them texan hogs come winter time. With a scope this rifle can easily punch holes at 200-300 yards easily. I give it a 10/10. It's definitely a keeper.
July 9, 2017

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