1 to 20 of  121 products for m4 carbine for sale

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Ar-15/M16 Carbine Mil-Spec Buttstock Kit - Ar15 M4 Stock Assembly Mil-Spec -17%

Collapsible buttstock similar to the current US GI M4 carbine stock provides convenient six-position length-of-pull adjustment to fit different-size shooters, including those wearing body armor. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Buttstock is made from extremely tough, fiberglass-reinforced, injection-molded nylon to resist impact, heat, moisture, extreme cold, and most cleaning solvents. Steel lock nut has four square notches and pre-cut detents for staking to lock plate. Available with Mil-Spec (nominal 1.14" O.D.) receiver extens Mfg: Brownells SPECS: Aluminum and fiberglass-reinforced, injection-molded nylon, matte black. 8¾" (22.2cm) OAL collapsed; 11¾" (29.9cm) OAL fully extended

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Brownells
$59.99 $49.99 See It
Ar-15/M16 5.56 Hammer Forged Barrels - 14.5'''' M4 Carbine 5.56 Barrel, 1-7 Twist

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential—like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile, length, and Old Style .625" gas block/sight base option to fit your needs. 5.56x45 barrels come in 10.5”, 14.5” and 16” lengths, with the shorter barrels featuring carbine length gas system. Barrels are available in lightweight or government contours, and M4 fo Mfg: Daniel Defense

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Brownells
$289.00 See It
Ar-15/M16 Carbine Commercial Buttstock Kit - Ar-15/M16/M4 Collapsible Buttstock

Collapsible buttstock similar to the current USGI M4 carbine stock provides convenient six-position length-of-pull adjustment to fit different-size shooters, including those wearing body armor. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes 1.17'''' diameter commercial buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Convert a fixed-stock, flattop rifle to M4 carbine configuration without permanent alterations to gun. Buttstock made from extremely tough, fiberglass-reinforced, injection-molded nylon that resists impact, heat, moisture, extreme cold, and most cleaning solvents. Stock interior diameter is Mfg: Brownells SPECS: Aluminum and fiberglass-reinforced, injection-molded nylon, matte black. 8¾� (22.2cm) OAL collapsed; 11¾� (29.9cm) OAL fully extended.

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Brownells
$79.99 See It
Ar-15/M16 Carbine Handguard - M4 Carbine Handguard, Single Shield

Snap-on USGI-type replacement for your carbine’s factory-original handguard is made of tough, fiberglass-reinforced, injection-molded polymer that delivers superior impact and abrasion resistance. The ridged gripping surface and top/bottom vent holes retain the weapon’s authentic military look, while an internal heat shield of lightweight aluminum protects your hand from barrel heat. M4 model has standard-issue single-layer heat shield on upper and lower handguard. Fits AR-15/M16/M4 with carbine-length gas system. Mfg: Double Star SPECS: Fiberglass-reinforced polymer, matte black. 6½” (16.5cm) long. Standard – Approx. 2½” (6.4cm) O.D. at rear tapering to 2¼” (5.7cm) O.D. at front. Single Heat Shield.

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Brownells
$17.99 See It
Ar-15/M16/M4 Skinny Style Carbine Handguard - Skinny M4 Carbine Handguard

Snap-on USGI-type replacement for your carbine’s factory-original handguard is made of tough, fiberglass-reinforced, injection-molded polymer that delivers superior impact and abrasion resistance. The ridged gripping surface and top/bottom vent holes retain the weapon’s authentic military look, while an internal heat shield of lightweight aluminum protects your hand from barrel heat. Skinny models have standard-issue single-layer heat shield on upper and lower handguard. Skinny M4 model has narrower diameter for operators who prefer a minimal bulk handguard. Fits AR-15/M16/M4 with carbine-length gas system. Mfg: Double Star SPECS: Fiberglass-reinforced polymer, matte black. 6½” (16.5cm) long. Skinny – Approx. 2¼” O.D. at rear tapering to 2” (5.1cm) O.D. at front. Single heat shield only.

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Brownells
$15.99 See It
Ar-15/M16 Limsaver® Carbine Recoil Pad - Limbsaver Carbine Recoil Pad

Synthetic rubber recoil pad slips over the hard plastic buttplate on an M4-type adjustable carbine stock for secure, non-slip shouldering and as much as 70% reduction in felt recoil. Made from proprietary NAVCOM™ shock-absorbing material that won’t crack, split, or take a “set.” Spreads recoil over a larger area and prevents the stock from digging into your shoulder during long periods in the ready position. Improves weapon control and reduces muzzle jump to aid in fast, accurate follow-up shots. Secure snap-on design for quick installation and removal. Mfg: Sims Vibration Laboratories SPECS: NAVCOM synthetic material, black. 5¼" (13.3cm) high, 2" (5.1cm) wide. Fits M4-type adjustable carbine stocks with buttplate up to 5-3/16" (13.2cm) high x 1-7/8" (4.8cm) wide. Adds .750 inch to overall length of M-4 stock.

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Brownells
$36.99 See It
Ar-15/M16 223 Wylde Match Barrels - 16'''' Mid-Length Carbine Barrel -11%

Precision-machined stainless steel barrels feature a .223 Wylde chamber that helps maximize the long-range performance of your AR-15 with both .223 Remington and 5.56x45mm NATO ammunition. With 6-groove, 1-7" button rifling for accuracy and M4-type feed ramps for reliable feeding, these barrels help you reach out to distant targets with issued or magazine-length ammunition. The 18" barrels offer the Special Purpose Rifle (SPR) profile designed to optimize accuracy out to 600 meters, and are available with Mid-Length or Rifle-Length gas systems. SDM barrel features a heavy, fluted profile under the handguards, for added strength and rigidity.  Threaded muzzle accepts a varie Mfg: White Oak Armament SPECS: Stainless steel, natural finish. .750" (1.9cm) O.D. at gas port. Barrel extension .999" (2.5cm) O.D. 6-groove, 1-7" rifling. Muzzle threads: ½"-28 tpi. 16" Carbine - 2 lbs. 2oz. (963g). 18" Mid-Length/Rifle - 2 lbs. 9oz. (1.1kg).SDM

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Brownells
$269.99 $239.99 See It
Ar-15/M16 5.56 Hammer Forged Carbine Barrel - 16'''' Carbine Barrel

These carbine barrels are hammer forged for Spike’s by FN, and are chrome lined and finished to M-249 specs for durability. Magnetic particle inspected (MPI) and high pressure tested (HPT) to ensure superb quality. Both models drilled for a mid-length gas system for extra reliability, with a slimmed-down profile between the barrel extension and gas port to save weight. Barrel extension has M4 feed ramp cuts. 16" is slimmer at muzzle than standard carbine barrel. 14½" Optimum provides even more weight savings and minimum length for fast deployment and quick maneuverability. All NFA rules apply. Mfg: Spikes Tactical SPECS: Chrome-moly-vanadium steel, manganese phosphate finish, matte black. Muzzle threads: ½"-28 tpi. Chambered in 5.56 NATO with 1-7" twist rifling. 16"- 16½" (40.6cm) O.A.L. Barrel tapers from .680" to .655" (17.2mm to 16.6mm) under handguard. .750&q

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Brownells
$279.99 See It
Ar-15/M16 Base Piston Upper Receivers - Gas Piston Upper Receiver, Carbine

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: norm Mfg: Adams Arms 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, Par

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Brownells
$588.99 See It
Car-15/M4 9mm Carbine Buffer - 9mm Carbine Buffer

9mm Carbine Buffer - Steel, matte black oxide finish. Mfg: Rock River Arms

Brownells
$27.99 See It
Ar-15 Compact Carbine Stock

The North Eastern Arms Compact Carbine Stock (CCS) is the ultimate Personal Defense Weapon (PDW) solution. A collapsible stock; shortening the overall length of the rifle approximately 2-7/8” inches compared to a traditional M4 stock. The CCS has been designed with the professional in mind allowing for quick deployment into the firing position. The CCS is a 2 position stock and can simply be pulled into the fully extended position without the need for manipulation and collapsed by depressing the locking mechanism. The CCS is made out of 6061 T6 Aluminum, 4140 steel and a durable polymer buttplate to ensure its durability in the harshest environments. The aluminum components fea Mfg: North Eastern Arms SPECS: Fits - Standard AR-15/M16 receivers, 223R/5.56/.300 AAC/Blackout/6.8 Rem. Will not fit Colt Sear Block or billet lowers due to rod interference. Collapsed Length - 4.5”. Extended Length - 8.5”. Weight - 2 lbs.

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Brownells
$329.00 See It
Ar-15/M16 5.56 Hammer Forged Barrels - 14.5'''' Lightweight Carbine 5.56 Barrel, 1-7 Twist

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential—like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile, length, and Old Style .625" gas block/sight base option to fit your needs. 5.56x45 barrels come in 10.5”, 14.5” and 16” lengths, with the shorter barrels featuring carbine length gas system. Barrels are available in lightweight or government contours, and M4 fo Mfg: Daniel Defense

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Brownells
$289.00 See It
Ar-15/M16 5.56 Hammer Forged Barrels - 10.3'''' Government Carbine 5.56 Barrel, 1-7 Twist

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential—like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile, length, and Old Style .625" gas block/sight base option to fit your needs. 5.56x45 barrels come in 10.5”, 14.5” and 16” lengths, with the shorter barrels featuring carbine length gas system. Barrels are available in lightweight or government contours, and M4 fo Mfg: Daniel Defense

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Brownells
$289.00 See It
Ar-15/M16 Wood Carbine Furniture Sets - Walnut Carbine

Beautifully finished stock sets in good-looking laminate or fancy AAA-grade American Walnut give your AR that “trophy” rifle look without altering its shooting capabilities. Each set consists of an A2-style buttstock with an integral cheek rest for a comfortable cheekweld, plus an ergonomically contoured pistol grip, and forearm. Snaps on using your rifle’s existing handguard cap and delta ring—no gunsmithing, no permanent alterations to gun. Pistol grip has finger grooves, a palm swell, and a gently curved backstrap to give you a solid, comfortable purchase. Buttstock fits a standard A2-length buffer tube (available separately). Laminate model available in Brown o Mfg: Lucid SPECS: Laminated hardwood or American Walnut. Fits A2 fixed-stock buffer tube, available separately. Carbine handguard replaces M4-type handguard.

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Brownells
$299.99 See It
308 Ar Carbine Buffer Tube Assembly - Carbine Stock Mount Kit, Mil-Spec

Genuine DPMS factory parts will help you repair an existing rifle or correctly install a stock to a custom build. Buffers and springs are weighted to function properly in DPMS LR-308 and Remington R-25 rifles. Complete Carbine Stock Mounting Kit includes heavy duty, six-position aluminum buffer tube (also called the receiver extension) for mounting an M4-type collapsible stock to your .308 rifle. Includes the receiver extension, locking nut, and correct-weight buffer and spring. Available to fit Mil-Spec or Commercial stocks. Carbine Buffer and Buffer Spring also sold separately. Rifle Buffer and Spring fit buffer tube for fixed, A2-type rifle stock; will not work in carbine tube. Mfg: Dpms SPECS: Mil-Spec assembly fits 1.14" O.D. M4-type buffer tube. Commercial fits 1.17" O.D. M4 buffer tube. Receiver Extension – extruded aluminum, hard-anodized matte black. 7¾" (19.7cm) long. Endplate – Steel, matte black phosphate finish. 1-3/8" (3.5cm

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Brownells
$69.94 See It
Stock Assembly, Carbine, M4

Stock Assembly, Carbine, M4 Mfg: Dpms

Brownells
$79.99 See It
Ar-15/M16 Carbine Commercial Buttstock - M4 Adjustable Buttstock

Six position, machined 6061-T6 heat treated aluminun tube and Nylon 66 buttstock with 33% more glass for strength provide a durable stock system built to meet the demands of the toughest tactical environments. Buttplate, adjustment latch, and latch nut are slightly radiused and contoured to reduce snagging on clothing or equipment. Extra material around the latch hole provides additional strength. Four flats on the buffer tube make it easier for sand and debris to fall out and not hinder stock adjustment. Furnished with buffer tube, recoil spring, receiver plate, rear sling swivel and lock-nut. Made in the USA. Mfg: Double Star SPECS: Aluminum tube, synthetic nylon stock, black. Length of pull: closed – 10¼” (26cm), extended – 13-5/8” (34.6cm).

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Brownells
$79.99 See It
Ar-15/M16 5.56 Hammer Forged Barrels - 16'''' Lightweight Carbine 5.56 Barrel, 1-7 Twist

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential—like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile, length, and Old Style .625" gas block/sight base option to fit your needs. 5.56x45 barrels come in 10.5”, 14.5” and 16” lengths, with the shorter barrels featuring carbine length gas system. Barrels are available in lightweight or government contours, and M4 fo Mfg: Daniel Defense

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Brownells
$289.00 See It
Ar-15/M16 5.56 Carbine Barrels - 16'''' Ar Barrel Threaded, Fluted 1:7

Black nitride, carbine-length barrels are chambered for 5.56mm NATO and have 1-7" rifling that helps stabilize heavy bullets. Exterior is sized to accept a .750" gas block, with the gas port positioned for a carbine-length gas system. Threaded ½"-28 tpi muzzle accepts a standard AR-15/M16 flash suppressor or muzzle brake. Pre-installed barrel extension has M4 feed ramp cuts that aid in reliable feeding. Fluted model has distinctive diamond cuts on the exterior that reduce weight, enhance rigidity, and give your rifle a unique custom look. Also provides extra surface area to aid in cooling the barrel. Mfg: Yankee Hill Machine Co., Inc. SPECS: 4140 carbon steel, heat treated to Rc 25-32, matte black nitride finish. 16.5" OAL. .750" O.D. at gas block. Muzzle threaded ½" x 28. 1-7" rifling twist rate.

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Brownells
$214.99 See It
Carbine Buffer Spring

Stainless steel carbine buffer spring manufactured to MIL-S-1357 specification for replacement on rifles with M4-type receiver extension tube for collapsible carbine buttstock. Replace a fatigued spring, or use as part of the rifle-to-carbine stock conversion. Cold drawn to ASTM A313 standard for heat- and corrosion-resistance, and case hardened for improved resistance to surface wear. Mfg: Dpms SPECS: 631 stainless steel. Fits AR-15/M16 rifles chambered in .223/5.56mm with M4-type receiver extension for collapsible buttstock.

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Brownells
$4.29 See It
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