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300 Blackout AR 15 Rifle Kit (10.5″ Stainless Barrel & 10″ M-Lok Handguard) w/ 80% Lower

$700.00 $600.00 (You Save $100.00)

Complete Build Kit - 300 Blackout (10.5" SS Barrel & 10" M-Lok Handguard) AR 15
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SKU: UA300PHB10.517(SS)-(10)MLOK_Budget

Description

Our 10.5″ pistol upper chambered in .300 AAC blackout provides the perfect balance of compact profile and weight savings. The full-length M-LOK handguard is skeletonized, so it shaves off additional weight.  It offers some serious aesthetic appeal and provides plenty of rail space for attachments at the same time. A free-float design further improves accuracy.  It has a carbine gas system.  All these factors together mean this .300 blackout upper will reliably handle both supersonic and subsonic .300BLK loads. Topping it all off is an industry-leading 416R stainless barrel with a 1:7 twist rate to make this pistol-length upper assembly one of the most accurate .300 blackout uppers you’ll find in a pistol configuration.

The words “accuracy” and “pistol upper” don’t often go together, so we sought to fix that. We combined a best-of-both-worlds 10.5″ barrel length with a heavy profile and 416R stainless steel to offer the most accuracy possible. If there’s a .300 blackout pistol upper that might hit 1 MOA accuracy, you’re looking at it. Everything is manufactured under ISO 9002 quality control standards, and all rifling is CNC cut and heat-treated to a hardness rating of RC 28 to 32. This guarantees the most accurate barrel possible, with the most barrel life and wear resistance.

AR 15 RIFLE KIT SPECS:

Gas System: Pistol-length
Barrel Profile: Heavy
Barrel Steel: 416R
Barrel Finish: Stainless steel
Chrome Lining: No
Muzzle Thread: 5/8×24
Chamber: .300BLK
Twist Rate: 1:7
Barrel Extension: .300 AAC Blackout
Gas Block Size: .750″
Gas Block Type: Low-profile
Muzzle Device: A2 Flash hider
Receiver Material: Forged 7075 T6
Receiver Type: A4
Handguard Type: 10″ M-Lok
Bolt Carrier Group Included: Yes
Bolt Steel: 9310 steel, magnetic particle inspected
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes

Benefits of the 10.5” Pistol-Length SS AR 15 Rifle Kit:

  • 100% legal to own and ship to your front door
  • Not considered a firearm – no FFL paperwork needed!
  • 416R stainless barrel and Freedom parts kit ensure sub-MOA accuracy
  • Prebuilt upper with gas system removes the guesswork of rifle making
  • Includes bolt carrier group, free-floated M-Lok handguard and lower parts kit

AR 15 Rifle Kit Details (Expanded):

Barrel: 10.5″ pistol-length stainless steel, chambered in .300BLK, 1:7 twist rate, .750″ low-profile gas block, 10″ free-float M-Lok handguard, with an A2 “birdcage” flash hider.

Upper Receiver Assembly: Forged from 7075 T6 aluminum, hard-coat anodized in black for durability, features M4 feed ramps, and are made in the USA.

Bolt Carrier Group: The bolt carrier is made from 9310 steel and has a staked gas key and black nitride finish. The bolt itself comes complete with an extractor spring and O-ring insert.  It accepts .223 Wylde, 5.56mm, and .300BLK calibers (though you should NEVER attempt to use a caliber for which your rifle is not chambered), and is magnetic particle inspected.

80% Lower Receiver: Choose to receive a forged or billet Fire/Safe 80% lower receiver.  Our lower receivers are anodized to match the upper receiver perfectly. and they come ready for machining of the trigger pocket and drilling of the safety selector and trigger pin holes.

AR-15 Lower Parts Kit: includes all parts needed to complete the lower receiver including pistol grip, mil-spec safety selector, and trigger/fire control group.

Lower Assembly: comes with complete buffer tube assembly including buffer, buffer spring, six-position buffer tube, latch plate, castle nut, and butt stock based on original Colt design.

Charging Handle: standard size, made from 6061 aluminum.

Please note: This build kit requires that the builder complete the 80% lower receiver themselves, but that’s the rewarding part of the experience (and the only way to build your own AR-15 without the need of an FFL transfer or serialization).

It is your responsibility to fully understand all applicable laws and regulations regarding purchase and ownership of uppers with a barrel length of less than 16″.

No FFL required Made in the USA Lifetime Warranty

300 Blackout AR 15 Rifle Kit (10.5″ Stainless Barrel & 10″ M-Lok Handguard) w/ 80% Lower

$700.00 $600.00 (You Save $100.00)

$700.00 $550.00 (You Save $150 )
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