Looking for the best Gas Piston System. Look no further! Black Rifle Arms has developed the most innovated Gas Piston Systems, best bolt carrier groups, enhanced firing pins, extended firing pins, gas piston, piston, piston uppers, 300BLK Piston Uppers

ALL ORDERS $500+ WILL REQUIRE INSURANCE AND SIGNATURE CONFIRMATION!

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CHECKOUT MINUMUM & SHIPPING DESTINATIONS

MINIMUM TO CHECKOUT $5.00
WE SHIP WITHIN THE USA
GUAM & PUERTO RICO

TIMEFRAME TO FULFILL YOUR ORDER

SMALL COMPONENTS: 1 to 2 Business Days
COMPLETE UPPERS 1 to 2 WEEKS
Add Additional 1 to 2 Weeks for Custom Cerakote

AVERAGE SHIPPING TRANSIT TIMES
NOT INCLUDING HOLIDAYS

USPS GROUND ADVANTAGE: 2 to 5 Business Days
USPS PRIORITY: 2 to 3 Business Days
UPS GROUND: 2 to 5 Business Days

1. Home
2. AR-15 PISTON UPPERS
3. LOW PROFILE REGULATED PISTON UPPERS
4. 5.56 L.P.R. PISTON UPPERS
5. AR-15 5.56x45 8.5'' and 11'' L.P.R. CARBINE PISTON UPPERS
6. 10.5" 5.56x45 L.P.R. Piston Upper with Aero Precision 9" M-LOK Handguard

10.5' 5.56x45 L.P.R. Piston Upper with Aero Precision 9' M-LOK Handguard

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10.5" 5.56x45 L.P.R. Piston Upper with Aero Precision 9" M-LOK Handguard

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Your Price: $1,034.99

Questions about this item? Ask here.

Part Number: 2010131

Availability: Out of Stock

Choose Options

SIGHT OPTIONS

SIGHT OPTIONS No Sights Magpul MBUS Pro Flip Up Front and Rear Sights (+$195.95)

C PRODUCT MAGAZINE *

10rd Magazine

CHARGING HANDLE OPTIONS

CHARGING HANDLE OPTIONS Remove Mil-Spec Charging Handle (-$15.00) Add Radian Raptor Ambidextrous Charging Handle - BLK (+$74.00) Add Radian Raptor Ambidextrous Charging Handle - FDE/BLK (+$74.00) Add Radian Raptor SD Ambidextrous Charging Handle -BLK (+$94.00) Add Radian Raptor SD Ambidextrous Charging Handle - FDE/BLK (+$94.00)

MUZZLE DEVICE OPTIONS

MUZZLE DEVICE OPTIONS Remove A2 Flash Hider and Crush Washer (-$5.00) Add RM-556 Muzzle Device (+$50.00)

SPARE BOLT CARRIER BUFFER OPTONS

SPARE BOLT CARRIER BUFFER OPTONS Add Spare Bolt Carrier Buffer (+$10.00)

CERAKOTE OPTIONS - CERAKOTE OPTION ADDS 1 to 3 WEEKS TO A BUILD

CERAKOTE OPTIONS - CERAKOTE OPTION ADDS 1 to 3 WEEKS TO A BUILD No Cerakote Handguard (+$65.00) Upper Receiver (+$75.00) Upper Receiver, Forward Assist and Dust Cover (+$100.00) Upper Receiver, Forward Assist, Dust Cover and Charging Handle (+$120.00) Handguard and Upper Receiver (+$145.00) Handguard, Upper Receiver and Charging Handle (+$175.00) Handguard, Upper Receiver, Forward Assist and Dust Cover (+$185.00) Handguard, Upper Receiver, Charging Handle, Forward Assist and Dust Cover (+$200.00)

CERAKOTE PATTERN

CERAKOTE PATTERN Not Applicable Solid - 1 Cerakote Color Needed Battleworn - 2 Cerakote Colors Needed (+$60.00)

CERAKOTE COLOR - 1 COLOR OPTION

Not Applicable Blue Titanium Titanium Tungsten Stainless Cobalt Midnight Bronze Burnt Bronze Satin Aluminum Tactical Grey Sniper Grey Smith Wesson Grey Noveske Bazooka Green Glock FDE Coyote Tan Desert Sand Magpul FDE Magpul Foliage Green Magpul OD Green Sky Blue High Vis Orange USMC Red Crimson Red Gold Bright White Armor Black Graphite Black

CERAKOTE COLOR - 2 COLORS OPTIONAL

Not Applicable Blue Titanium (+$25.00) Titanium (+$25.00) Tungsten (+$25.00) Stainless (+$25.00) Cobalt (+$25.00) Midnight Bronze (+$25.00) Burnt Bronze (+$25.00) Satin Aluminum (+$25.00) Tactical Grey (+$25.00) Sniper Grey (+$25.00) Smith Wesson Grey (+$25.00) Noveske Bazooka Green (+$25.00) Glock FDE (+$25.00) Coyote Tan (+$25.00) Desert Sand (+$25.00) Magpul FDE (+$25.00) Magpul Foliage Green (+$25.00) Magpul OD Green (+$25.00) Sky Blue (+$25.00) High Vis Orange (+$25.00) USMC Red (+$25.00) Crimson Red (+$25.00) Gold (+$25.00) Bright White (+$25.00) Armor Black (+$25.00) Graphite Black (+$25.00)

IF YOU CHOOSE 2 COLORS WRITE-IN COLOR PARTS CHOICE

If you selected 2 colors please write-in what parts are being Cerakoted in colors you selected. Example: write in Handguard in FDE, Upper Receiver in Coyote Tan, etc:

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• Description
• Product Features
• Questions and Answers
• Product Specifications
• Ship Requirements

Black Rifle Arms^® 10.5" L.P.R. AR-15 Carbine 5.56 Complete Piston Upper with 9" Aero Precision Enhanced M-Lok Handguard

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• 7075-T6 Aluminum Forging : ✓
• Piston Upper Fits Any Mil-Spec Lower: ✓
• One Piece Bolt Carrier Group with Buffer Technology: ✓
• Aero Precision Enhanced M-Lok Handguard with Hardened Steel Piston Barrel Nut: ✓
• Piston Bolt Carrier Law Folder Compatible : X
• Complete Upper Weight : 3 lbs 12.7 oz

Q: Do the bolts have single or dual ejectors? I can't find the information or pictures that shows the front face. Thank you.

Asked by: Matthew - 8/27/2022

A: Single ejector on our 5.56 bolt assemblies.

Answer provided by: Black Rifle Arms Sales Team (9/1/2022)

Q: Will this upper work without a buffer tube?

Asked by: William Carleton - 7/17/2022

A: No, our uppers are designed to be pinned to a mil-spec lower with buffer tube.

Answer provided by: Administrator (7/18/2022)

Q: Howdy! I have a 9.5 Midwest industries quad rail will it work on this upper?

Asked by: Barrett - 2/5/2022

A: No, the L.P.R. system was designed around the AP Enhanced Handguard utilizing our proprietary barrel nut.

Answer provided by: Administrator (2/7/2022)

Q: If I order the aero precision monthly build kit, could I send the upper, and handguard in to be built into a 10.5 5.56 L.P.R Piston upper

Asked by: P HEMENWAY - 9/4/2021

A: We can, but it's best to call and talk to Charles about the details of what is needed. He will be out of the office on Monday and Thursday of this week.

Answer provided by: Administrator (9/26/2021)

Q: I have this item, I was just wondering if the BCG is full auto rated? I noticed the DI enhanced carriers are but I wanted to make sure this is.

Asked by: W Fish - 8/25/2021

A: Yes the bolt carriers are full auto rated.

Answer provided by: Administrator (8/25/2021)

Questions about this item? Ask here.

Black Rifle Arms^® 10.5" L.P.R. AR-15 Carbine 5.56 Complete Piston Upper with 9" Aero Precision Enhanced M-Lok Handguard

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LOW PROFILE REGULATED PISTON SYSTEM FEATURES:

• 4 Position Regulated Gas System
• Low Profile Gas Block Design
• Ambi-Regulator Knob
• 360° Continuous Rotation
• Easily Adjustable with One Hand
• Easily Adjustable with Gloves On
• Easily Adjustable from Firing Position
• Audible and Palpable Setting Confirmation
• No Detent Pin to Push In to Adjust Gas Regulator
• Regulator Knob Allows for Zero Visibility Adjustment
• Interlocking Mechanism Prevents Accidental Rotation of Knob
• Knob Configured for Rapid Adjustment with No Loss of Target Engagement

HANDGUARD SPECS: 

• 1-pc Free Float Design
• Built-in Anti-Rotation Tabs
• Scalloped Rails
• Continuous Top Rail
• 1.72" Inside Diameter (from barrel nut to forward end) 
• Fits Most Muzzle Devices and 1.5" Suppressors
• Gen 2 Features:
• Quick Disconnect Sling Socket at 3, 6 and 9 O'clock Positions
• Additional Milling Along Flats to Aid with Gripping and Add Visual Appeal
• New Profile for Continuous Picatinny Top Rail

BARREL SPECS:

• Caliber: 5.56x45mm NATO
• Length: 10.5"
• Material: 4150 CrMoV 11595E Steel
• Profile: Gov't Tactical
• 1/7 Twist
• 1/2-28 Threaded Muzzle
• Gas Block Journal: .750"
• Nitride: Inside and Out
• Feed Ramp: M4
• Barrel Extension Installed and Torqued After Nitride Finish: Yes

Shipping Information or Requirements:

NO FFL REQUIRED - Ships Directly to Customer: YES

REQUIRES SIGNATURE UPON DELIVERY: YES

ALL NFA RULES APPLY: YES

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