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. 6.5 GRENDEL L.P.R. PISTON UPPERS
5. 6.5 Grendel L.P.R. Rifle Length Piston 18" M4E1 Upper with A.P. 15" M-Lok Handguard

Upper Shown with Upgraded MAGPUL Enhanced Ejection Port Cover

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6.5 Grendel L.P.R. Rifle Length Piston 18" M4E1 Upper with A.P. 15" M-Lok Handguard

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Your Price: $1,319.98

BUILD TO ORDER

Questions about this item? Be the first to ask here.

Part Number: 2108271-2

Availability: Out of Stock

Choose Options

SIGHT OPTIONS

SIGHT OPTIONS No Sights Magpul MBUS Pro Flip Up Front and Rear Sights (+$195.99)

UPGRADE DUST COVER

UPGRADE DUST COVER MAGPUL ENHANCED EJECTION PORT COVER - BLK (+$6.00) MAGPUL ENHANCED EJECTION PORT COVER - FDE (+$6.00)

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 (-$14.00)

SPARE BOLT CARRIER BUFFER OPTIONS

SPARE BOLT CARRIER BUFFER OPTIONS No Yes (+$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 Blackout 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 Crimson Red (+$25.00) Gold (+$25.00) Bright White (+$25.00) Blackout (+$25.00) Graphite Black (+$25.00)

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• Description
• Product Features
• Product Specifications
• Ship Requirements

Black Rifle Arms ^® L.P.R. AR-15 Rifle Length 6.5 Grendel 18" Piston M4E1 Upper with 15" Aero Precision Enhanced M-Lok Handguard

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• 7075-T6 Aluminum Forging: ✓
• Test Fired with Wolf Ammunition : ✓
• Piston Upper Fits Any Mil-Spec AR-15 Lower: ✓
• One Piece Bolt Carrier Group with Buffer Technology: ✓
• Aero Precision Enhanced M-Lok Handguard with Hardened Steel Piston Barrel Nut: ✓

Black Rifle Arms ^® L.R.R. AR-15 Rifle Length 6.5 Grendel 18" Piston Upper with 15" Aero Precision Enhanced M-Lok Handguard

---

Low Profile Regulated Piston System:

• 4 Position Regulated Gas System
• Low Profile Gas Block Design
• Ambi-Regulator Knob
• 360° Continual 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:

• Manufacturer: Ballistic Advantage
• Premium Black Series
• Material: 416 Stainless Steel
• QPQ Corrosion Resistance
• Barrel Length: 18"
• Twist: 1:8
• Contour: SPR 
• Chamber: 6.5 Grendel 
• Thread: 5/8x24”

Shipping Information or Requirements:

NO FFL REQUIRED - Ships Directly to Customer: YES  

REQUIRES SIGNATURE UPON DELIVERY: YES

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