Black Rifle Arms .308 L.P.R. 16" Mid-Length Piston Upper with A.P. M-Lok Handguard, 4 Position Gas Regulated Piston Upper, Keymod Handguard

Description
Product Features
Questions and Answers
Ship Requirements

Black Rifle Arms^® L.P.R. .308 Piston Upper with Aero Precision M-Lok Handguard

.308 Piston Upper Guaranteed to Fit Aero Precision M5 .308 Lower

Designed to fit .308 DPMS Patterned Lowers

Due to Variances between Manufacturers, We Can't Guarantee a Perfect Fit with Other Manufacturers Lowers

CAUTION: NOT ALL .308 CHARGING HANDLES ARE COMPATIBLE WITH PISTON .308 UPPERS

Compatible Charging Handles we are aware of:

Aero Precision Standard Charging Handle
Aero Precision Breach Charging Handle
Raptor Charging Handles

LOW PROFILE REGULATED PISTON:

4 Position Regulated Gas System

Normal Setting
Adverse Setting
Silencer Setting

Silencer Setting is for High-Back Pressure Silencers
Low-Back Pressure Silencers use the Normal Setting

Off Setting

Low Profile Pinned 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

BARREL SPECS:

Manufacturer: Black Rifle Arms
Material: 4150 CrMov
Barrel Length: 16"
Mid Length Gas System
Twist: 1/10
Melonite: Inside and Out
Contour: Modern Series
Chamber: .308 Winchester
Thread: 5/8x24"

View all Q&A

Q: Is there any chance that I would be able to purchase, this without a handgaurd and barrel. I understand that a lack of cohesion in the AR10 gun making world, has prevented you from making conversion kits, but I'm willing take your upper and piston gas system as is and work out the rest on my own. I'm fully aware of the challenges that I face in taking your system and putting my own stuff on it, but it's that challenge I would like to face.

Asked by: Zach - 2/20/2025

A: So these go out as complete uppers, we do not sell end user piston kits.

Answer provided by: Administrator (2/21/2025)

Q: Is this upper compatible with the aero precision m5 lower?

Asked by: Craig - 1/23/2024

A: Yes we highly recommend using our .308 uppers on Aero's M5 lowers since we use their M5 uppers.

Answer provided by: Administrator (2/28/2024)

Q: First, I purchased your 300 BO Upper last year and all I have to say is "AMAZING". It has become my truck rifle since I travel so much. That being said, I would like to order one of your 16" 308 uppers and my question is, what does "Out Of Stock" mean? I know that sounds like a stupid question, however, does it mean you still build them and I can order? I am definitely willing to wait. Your work is outstanding. Thanks, Shawn

Asked by: Shawn McCafferty - 12/26/2023

A: Sorry we missed your question and not answering in a timely manner, but out of stock means one or more components are missing to complete this build. I believe we are waiting on handguards to come back in stock with Aero.

Answer provided by: Administrator (2/28/2024)

Q: What buffer and spring are recommended for your 16” 308 to run correctly?

Asked by: Anthony Kessler - 5/2/2023

A: Standard carbine .308 with the 5 oz. .308 buffer. It fits the standard AR-15 carbine receiver extension a.k.a. buffer tube.

Answer provided by: Administrator (5/4/2023)

Q: Is your bolt carrier compatible with JP Enterprises Silent Captured Spring system?

Asked by: Bill - 4/21/2023

A: JP Silent Capture Spring is not compatible with our bolt carrier buffers. In order to use JP Silent Capture Spring, end-user would need to make modifications to the carrier's integrated buffer.

Answer provided by: Administrator (4/24/2023)

Q: Does the lower need to have a buffer tube for the upper to operate?

Asked by: Michael Porter - 4/3/2023

A: Yes, requires a DPMS Pattern complete lower with buffer tube.

Answer provided by: Black Rifle Arms Sales Team (4/3/2023)

Q: i did apply on the waiting list but when would you guesstimate more 308 16" piston uppers to be available ??? -thanks !!!

Asked by: Dwayne - 3/2/2023

A: They should come available in April, so sometime next month.

Answer provided by: Administrator (3/21/2023)

Q: What is the current lead time on your 16” .308 upper?

Asked by: David Abney - 1/22/2023

A: We added more in stock, so normal build times is between 1 to 2 weeks for all uppers, but we ask up to 3 weeks as we build and test fire each upper that leaves us.

Answer provided by: Administrator (1/22/2023)

Q: 1. Is the 308 L.P.R. 16" Mid-Length Piston Upper w/ A.P.M-Lok Handguard compatible with the DPMS 308 Lower System? 2. Does the 'included' Buffer Tube include the appropriate Spring, etc.? Thanks, B

Asked by: B - 1/7/2023

A: .308 Piston Upper Guaranteed to Fit Aero Precision M5 .308 Lower but are designed to fit .308 DPMS Patterned Lowers.
Due to Variances between Manufacturers, we can't guarantee a perfect fit with other manufacturers lowers. This comes with only the buffer tube, you would need to purchase the spring and buffer separately.

Answer provided by: Black Rifle Arms Sales Team (1/9/2023)

Q: 3. What Type/ Brand Magazines are compatible, or recommended if using a DPMS 308 Lower?

Asked by: B - 1/7/2023

A: We prefer either C Products Defense or Magpul.

Answer provided by: Black Rifle Arms Sales Team (1/9/2023)

Questions about this item? Ask here.

CHECKOUT MINUMUM & SHIPPING DESTINATIONS

TIMEFRAME TO FULFILL YOUR ORDER

AVERAGE SHIPPING TRANSIT TIMES
NOT INCLUDING HOLIDAYS

.308 L.P.R. 16" Mid-Length Piston Upper with A.P. M-Lok Handguard

Choose Options

Q: Is this upper compatible with the aero precision m5 lower?

Q: What buffer and spring are recommended for your 16” 308 to run correctly?

Q: Is your bolt carrier compatible with JP Enterprises Silent Captured Spring system?

Q: Does the lower need to have a buffer tube for the upper to operate?

Q: i did apply on the waiting list but when would you guesstimate more 308 16" piston uppers to be available ??? -thanks !!!

Q: What is the current lead time on your 16” .308 upper?

Q: 1. Is the 308 L.P.R. 16" Mid-Length Piston Upper w/ A.P.M-Lok Handguard compatible with the DPMS 308 Lower System? 2. Does the 'included' Buffer Tube include the appropriate Spring, etc.? Thanks, B

Q: 3. What Type/ Brand Magazines are compatible, or recommended if using a DPMS 308 Lower?

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CHECKOUT MINUMUM & SHIPPING DESTINATIONS

TIMEFRAME TO FULFILL YOUR ORDER

AVERAGE SHIPPING TRANSIT TIMESNOT INCLUDING HOLIDAYS

.308 L.P.R. 16" Mid-Length Piston Upper with A.P. M-Lok Handguard

Choose Options

Q: Is this upper compatible with the aero precision m5 lower?

Q: What buffer and spring are recommended for your 16” 308 to run correctly?

Q: Is your bolt carrier compatible with JP Enterprises Silent Captured Spring system?

Q: Does the lower need to have a buffer tube for the upper to operate?

Q: i did apply on the waiting list but when would you guesstimate more 308 16" piston uppers to be available ??? -thanks !!!

Q: What is the current lead time on your 16” .308 upper?

Q: 1. Is the 308 L.P.R. 16" Mid-Length Piston Upper w/ A.P.M-Lok Handguard compatible with the DPMS 308 Lower System? 2. Does the 'included' Buffer Tube include the appropriate Spring, etc.? Thanks, B

Q: 3. What Type/ Brand Magazines are compatible, or recommended if using a DPMS 308 Lower?

Related Items

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AVERAGE SHIPPING TRANSIT TIMES
NOT INCLUDING HOLIDAYS