Ar-15/m16 Ar57 Upper Receiver 57 Center
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Ar-15/m16 Ar57 Upper Receiver 57 Center.
Converts Any AR-15 To Shoot 5.7 x 28mm
Complete upper receiver lets you shoot economical, gentle-recoiling 5.7 x 28mm ammunition in your AR. The innovative, low-profile 50-round magazine (sold separately) is positioned conveniently above the barrel for optimum weight distribution. Spent cases are ejected straight down through the magwell to avoid striking other shooters and for easy range cleanup. Simple, reliable blowback operation with a free-sliding bolt that’s the only moving part means there’s no gas system to foul or clog with carbon. Ultra-rigid, monolithic receiver/handguard rail is machined from a single block of aluminum, with nearly 3 feet of Picatinny rail space for mounting optics and other accessories. Plenty of vent holes in the handguard ensure maximum cooling during sustained fire. Free-floating, 4140 chrome-moly steel barrel is 16" long, with a unique, multi-port flash suppressor. Comes with a correct-weight recoil buffer for use with 5.7 x 28mm ammo; fits in the receiver extension of an M4-style stock. AR57 LEM Gen 2 features several improvements over the standard AR57. The Gen 2 is one pound lighter thanks to a fluted barrel. The new model also features an updated charging handle, ambidextrous magazine release and an extended rear rail. The extended rear rail allows for the mounting of a wider variety of optics.
SPECS: 25" (63.5cm) O.A.L. 4 lbs, 9 oz. (2.1kg) weight. Receiver/Handguard – 7075 T6 aluminum, hardcoat anodized, matte black. Barrel - 4140 chrome-moly steel, Parkerized, matte black. 16" (40.4cm) long, 1-8.5" twist.Learn More
Ar-15 Upper Receiver Stripped 5.56 Fostech Outdoors, Llc..
The Fostech Lite Series AR-15 Upper Receiver provides AR builders with the perfect companion piece for the company's Lite Series lower receiver. Each receiver is made using a blend of aluminum and magnesium, providing strength and lightness in equal parts. The upper receiver is designed for 5.56 NATO and related cartridges and comes completely stripped in a hard-anodized black finish.Learn More
Ar-15 Complete M4 Lower Receiver Spikes Tactical.
High-Quality Forgings Machine To Mil-Spec Dimensions; Stripped & Assembled Models
Semi-auto lower receiver is machined from a 7075 T6 aluminum forging to mil-spec dimensions for precise fit and outstanding performance. Ruggedized hardcoat anodized finish resists scuffs, scratches, and wear. Stamped and color-coded bullet selector position markings notify operator when weapon is in “safe” or “semi-auto.” A “full-auto” position is not selectable but gives this semi-auto lower receiver the appearance of being multi-burst capable. Magazine well features Spike’s spider logo and multi-cal engraving. Complete Lower w/Buttstock includes stainless steel trigger, black oxide finished trigger guard and hammer assembly, pistol grip, six-position mil-spec buffer tube (1.146" O.D.), ST-T2 tungsten heavy buffer, mil-spec 17-4 stainless steel buffer spring, and Spike’s M4 stock.
AR-15, Issue:11, Page:009
Big Book Catalog, Issue:71, Page:009
SPECS: Receiver - 7075 T6 aluminum, hardcoat anodized, matte black finish. Buttstock – Reinforced molded polymer, black. “Cal Multi” stamped on side of magazine well. .154" hammer/trigger pin holes. .250" takedown/pivot pin holes.Learn More
Juggernaut Lower Receiver 80%- Ar-15 Juggernaut Tactical.
The JT-15 Lower Receiver in 80% completed form. The JT-15 is precision CNC-machined from solid aerospace billet aluminum. It is not a cheap forging. This is a top-tier AR-15 lower receiver perfect for any high quality AR-15 build.
- T6 Heat-Treated 6061 Billet Aluminum
- Completed weight: 8 ounces
- Integral winter trigger-guard for added strength
- Flared magwell to improve mag changes.
- Laser engraved JTAC logo
- Broached magwell
- Threaded bolt catch
- Upper tensioning screw
- Bolt catch assembly screw
- No roll pins need for assembly
- Ambi Bolt Release/hardware
- Lifetime warranty against manufacture defects
- Threaded rear takedown pin
- Semi safe engraved on both sides
Returns will not be accepted once the receiver is modified in any way.
Ar-15/m16 5.56 16" Basic Piston Upper Receivers Adams Arms.
Ready To Install To Make A Reliable, Clean Running Piston Rifle
Complete Base upper receiver assembly comes ready to install on mil-spec lower receiver to produce a reliable, positive-cycling gas piston gun. Adams Arms’ proven piston system doesn’t vent hot gases and burned powder into the bolt carrier and receiver, so the gun runs cooler, with less fouling and wear on the action, and easier maintenance. Short-stroke piston shaft eliminates concussive gas expansion in the upper receiver for less violent cycling, smoother feeding, and reduced felt recoil. The receiver is forged from 6061 T6 aluminum and features M4 feed ramp cuts and a 13-slot Picatinny-cut flattop rail. The adjustable gas block allows three levels of gas release: normal fire, firing with a suppressor attached, or a single round fired without cycling. Picatinny rail on top of gas block accepts a variety of clamp-on tactical sights. All models have melonite-lined barrels chambered for 5.56mm NATO, with an A2 flash hider and a black Melonite® finish for superb wear resistance and up to 60% more corrosion resistance than traditional phosphate coating. Carbine - 16" barrel and M4-style carbine handguard. Mid-length – 16" barrel with a mid-length gas system that taps gas from farther up the barrel than a standard carbine-length gun for extra-smooth cycling and extraction. M4-style handguard.
AR-15, Issue:11, Page:017
Big Book Catalog, Issue:70, Page:015
SPECS: Receiver – 6061 T6 aluminum, hardcoat anodized, black. Barrel – Chrome-moly steel, Melonite coated, matte black. Gas Block, Piston Tube, Bolt Carrier – Steel, black oxide finish. Piston – Stainless steel. Carbine – 16" (40.6cm) barrel, Parkerized, matte black. 1-7" rifling. Reinforced polymer composite handguard, black. 4.2 lb. (1.9kg) total weight. Mid-length - 16" barrel. 1-7" rifling. Reinforced composite handguard.Learn More
Standard 700 La Receiver, Ss Remington.
Superior Strength, Legendary Performance
700 LONG ACTION RECEIVER
It’s been many years since Brownells has been able to offer the legendary Remington 700 action in our catalog (since #58 to be exact!). The problem has been unsteady supply: Remington Arms Co. will release actions to the commercial market only when it is sure it has enough supply to satisfy its own production needs for complete guns. Sometimes we are able to get them, sometimes we are not, and we do not want to promise them in a catalog, then be unable to fill orders. Now, however, through a new arrangement with Remington, we are able to offer both Long and Short 700 Actions.
Why The 700 Action?
It's simple. For 50 years, the 700 has been the flagship of commercial rifle actions, providing incomparable strength, proven reliability, superior accuracy, plus the popularity to support the largest aftermarket bolt action rifle parts supply in the industry. From competitive shooting, law enforcement, and the U.S. military, to the wildest reaches of every huntable continent, the 700 has proven itself with match-winning performance and life-saving dependability. It still ranks as the number one choice of custom gun makers and discriminating shooters everywhere.
When They're Gone…
There is, indeed, a limited number of commercial suppliers for these actions, and we are proud to be one of them. Although steadier now, the supply is still not certain enough that we’re ready to catalog them in our Big Book. We can only offer what we have in stock - and simply cannot guarantee permanent availability in the future. If they sell out, we all may be back to scrounging the gun shows and searching the Internet for a lucky deal on something used, or pirating the action from a brand new gun. While supplies do last, we'll be your source for the most successful, modern production rifle action ever designed.
Factory-Original, Current Production Of The Highest Quality
These receivers are from a current factory production run and meet the latest design specifications and quality control standards at the Remington factory. Each is precision-machined from either carbon steel or stainless steel barstock for uniform strength, drilled and tapped for scope bases, and ready to accept your choice of custom barrel and bottom metal (available separately from Brownells). Remington's famously smooth-cycling bolt assembly features two, up-front bolt lugs for tight lockup and reliable pressure retention, plus traditional 2-panel checkering on the bolt handle. With barrel installed and chambered, the recessed bolt face encloses the cartridge head in three rings of steel for exceptional strength, a snug cartridge fit, and precise alignment with the bore. A rivetless, circlip-type extractor provides positive case extraction. And, the heavy-duty, spring-loaded, plunger ejector clears the action quickly and reliably. But that's not all...each action is equipped with Remington's new, state-of-the-art, X-Mark Pro trigger for improved trigger pull and easy adjustment. The easy-to-reach, two-position thumb safety has been made more robust, engages quietly to prevent game-spooking, and allows unloading while in the “safe” position.
Your Single Source For Custom Gun Work
Build your custom rifle today on an action you can trust. Brownells has the tools, parts, accessories, and technical expertise you need to build the most accurate, enjoyable-to-shoot rifle you own.
Remington Arms Company, LLC (“Remington”) is voluntarily recalling Remington Model 700™ and Model Seven™ rifles which were manufactured from May 1, 2006 through April 9, 2014 and which have an X-Mark Pro® (“XMP®”) trigger. View more information on this recall.
Boxes may show signs of handling due to the Remington trigger recall, the action/receiver is a new item and the trigger has been examined by Remington.
Big Book Catalog, Issue:71, Page:159
SPECS: Receiver/Bolt - stainless steel, natural finish (SS). 1-1/16"-16 tpi thread. Bolt not equipped with Integrated Security System (ISS). X-Mark Pro Trigger - Steel, electroless nickel plated finish. Includes trigger lock and owner’s manual. DOES NOT include receiver plug screws, recoil lug, triggerguard, triggerguard screws, and magazine components. Long Action (LA) models available.Standard receivers have a .473" diameter bolt face.
Ar-15 8.5" Upper Assy 300blk Hbar Std Keymod Rail No Bcg Or Ch Radical Firearms.
The Radical Firearms 8.5" Radical Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 8.5" HBAR Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are not included.
- 8.5" HBAR Melonite Barrel
- 4150V Chrome Moly
- 1 in 8" twist rate
- 300 AAC BLACKOUT Chamber
- 5/8x24 Thread Pitch
- M4 Feed ramps
- Low Profile Micro Gas Block
- Stainless pistol-length gas system (this will cycle subsonic loads)
- Direct Gas Impingement
- Mil-Spec A2 Flash Hider
- 7" Free Float Radical Firearms/ Seekins Precision Keymod/ Picattiny Rail
- Integral Keymod and Picatinny Rail for Mounting Lights, Lasers, Bipods & Sights
- Forged Upper Receiver with Forward Assist, Shell Deflector
Big Book Catalog, Issue:71, Page:006
Ar-15 1045 Stripped Receiver Set For Glock® 45 Acp Angstadt Arms, Llc.
The Solution to a Serious Carbine
The Angstadt Arms AR-15 1045 stripped receiver set in .45 ACP is the ideal package when wanting to build a serious carbine. The 7075-T6 billet aluminum slick side upper receiver offers an appropriately sized ejection port without forward assist or dust cover.
The designated .45 ACP lower accepts Glock and all aftermarket Glock 45 ACP double stack magazines. It also features a flared magwell for faster reloads and an oversized and integrated trigger guard.
- For use with .45ACP bolt carrier and standard AR-15 hammer
- Lower weight: 10.8 oz
- Upper weight: 6.5 oz
The AR-15 1045 stripped lower receiver is machined from 7075-T6 billet aluminum with a matte black hard-coat anodized finish.Learn More