AR-15 UPPER RECEIVER PARTS

CMMG Stainless Steel Gas tube for AR15 carbine length gas system. Includes installation roll pin.

Heckler & Koch complete gas piston for MR556 and MR762 rifles.

• Machined from 8640 Steel
• Heat Treated
• Hard Chrome Plated
• 100% American Made

• Fits all standard AR15/M16 5.56 & .223 bolts
• Machined from 4140 bar stock
• Heat treated
• Shot peened
• Phosphate coated for reliability
• 100% USA Made

• Fits all standard AR type pistol length gas systems
• Precisely machined from seamless stainless steel tubing
• 100% USA Made

Aero Precision upper parts kit includes the parts you need to assemble your AR15 upper receiver.

Includes:

• Forward Assist Assembly
• Forward Assist Spring
• Forward Assist Roll Pin
• Ejection Port Cover Door
• Ejection Port Cover Rod with c-clip
• Ejection Port Cover Spring

Precision built!

Carrier Features:

• Material: Billet carrier machined from 8620 steel and case hardened
• Finish: Black Nitride - advanced lower friction coating that minimizes the need for lubricants and cleaning
• Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
• Firing Pin: Machined from 8740 steel and hard chrome coated
• Forward Assist serrations
• Laser engraved Aero Precision logo
• Carrier fits DPMS compatible style AR Rifles

Bolt Features:

• Material: Case Hardened 9310 Steel
• Finish: All bolt components are shot peened and black nitride coated
• Extractor: Machined from 4340 Steel with double o-rings and double springs
• Magnetic Particle Inspected and High Pressure Tested
• High pressure bolt - external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070"
• Multi-caliber bolt designed to function with .308, 7.62x51, 6.5 Creedmoor, .338 Federal and other .308 based cartridges.

Carrier Features:

• Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
• Finish: Mil-spec Phosphate coating
• Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
• Firing Pin: Machined from 8740 steel and hard chrome coated
• Forward Assist serrations
• Laser engraved Aero Precision logo
• Carrier fits AR .308 compatible style AR Uppers and Rifles

Bolt Features:

• Material: Case Hardened 9310 Steel
• Finish: All bolt components are shot peened and phosphate coated
• Extractor: Machined from 4340 Steel with double o-rings and double springs
• Magnetic Particle Inspected and High Pressure Tested
• High pressure bolt - external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070"
• Multi-caliber bolt designed to function with .308, 7.62x51, .338 Federal and other .308 based cartridges.

BCG Includes:

• Bolt carrier
• Complete bolt
• Firing pin
• Cam pin
• Retaining pin

• Fits all standard AR15/M16 sized carriers
• Not just a standard cotter pin. Correctly formed and final machined.
• Phosphate finish for durability and corrosion resistance
• Manufactured to mil-spec dimensions
• 100% USA Made

• Manufactured to milspec dimensions
• For use on M16, AR15, and AR10, style firearms
• 100% USA Mad

• Fits all standard AR type Carbine length gas systems
• Precisely machined from seamless stainless steel tubing
• 100% USA Made

Aero Precision .308/7.62 Nickel Boron BCG is an eye catching addition to your AR build. Exacting dimensions and superior coating ensure the highest quality and correct component interface.

Features:

• No Aero 'A' Logo
• Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
• Nickel Boron coated
• Bolt is machined from 9310 steel
• MPI
• Forward Assist serrations
• Weight: 17.92oz

BCG Includes:

• Bolt carrier
• Complete bolt
• Firing pin
• Cam pin
• Retaining pin

Compatible with LR-308, SR25 and DPMS Pattern

• Fits all standard AR15/M16 sized bolts
• Nitride finish for durability and corrosion resistance
• Machined to mil-spec dimensions
• 100% USA Made