PSA 16" M4 Carbine 5.56 NATO CHF Premium Rifle - 516445889

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PSA 16" M4 Carbine 5.56 NATO CHF Premium Rifle - 516445889


Quick Overview

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WARNING: This product can expose you to the chemical lead, which is known to the State of California to cause cancer and reproductive harm. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 516445889
UPC: 516445889
MFR#: 516445889
  • Barrel Length: 16"
  • Barrel Profile: M4
  • Barrel Steel: Cold Hammer Forged Chrome Moly Vanadium
  • Barrel Finish: Phosphate
  • Chrome Lining: Extra Thick
  • Muzzle Thread:                1/2" - 28
  • Chamber: 5.56 NATO
  • Twist Rate: 1 in 7"
  • Barrel Extension: M4
  • Gas System Length: Carbine
  • Diameter at Gas Block: .750"
  • Gas Block Type:                F-marked FSB
  • Muzzle Device: A2-style
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Hand guard Type: M4 w/ heat shields
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full Auto
  • Fire Control Group: Standard mil spec finish
  • Grip: A2-style
  • Stock: M4-style
  • Buffer Tube Length: Carbine
  • Buffer Tube Diameter: Mil-spec
  • Overall Length: 32"
  • Weight as configured: 6.8 lbs.

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Barrel: A proprietary blend of Hammer forged chrome molly vanadium made by FN that is referred to as "Machine Gun Steel" by virtue of its required use in FN's M249 and M240 weapons.   The hammer forging process work hardens the steel, making it more durable.  In addition, the chrome process for the bore allows for a lining almost twice as thick as a standard M16 for enhanced durability.  Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a carbine-length gas system.   The M4 profile barrel is Mil-spec phosphate coated, High Pressure tested and Magnetic Particle inspected.  Barrel is finished off with an F-marked front sight post with sling swivel, standard handguards and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized.   Uppers include forward assist and dust cover.  These uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt: Full-auto profile bolt carrier group.  Shot-peened, mil-spec Carpenter No. 158® steel bolt.  Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked per Mil-Spec.  8620 steel M-16 profile carrier is chrome lined and phosphate coated.

Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for caliber. Finish is hardcoat anodize. Mil-spec diameter 7075-T6 buffer tube is hardcoat anodized, has 6 adjustment positions, is fitted with a PSA M4 Carbine Stock.   The fire control group is a PSA mil-spec finished single-stage assembly.

SKU: 516445889
SKU 516445889
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 516445889

Questions and Answers

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Browse 5 questions Browse 5 questions and 3 answers
How does this compare to the PSA 16" FREEDOM RIFLE - 508052 ?
Steve C on May 10, 2018
BEST ANSWER: This has a cold hammer forged barrel made by FN. This is a machine gun type barrel. Better quality than the freedom line
When will you have your "premium M4's in stock?
Rick C on Aug 6, 2018
Will I need front and rear sights for this rifle or just rear?
Alex O on May 1, 2018
BEST ANSWER: Just a rear sight. The MBUS rear sights are good for these.
Does this come with a Mag?
James B on May 24, 2018
What does full auto bolt carrier profile mean? Is this a semi auto rifle or full auto?
Gary G on May 11, 2018
BEST ANSWER: It means that the bolt carrier is NOT slightly cut on the bottom as some AR bolts are to reduce the weight. This is able to be used in a full auto gun but this is a semi auto gun. The full auto carrier help make it run slightly smoother.


5.0 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Pleased so far
Flawless function, as accurate as I am. So far I am very happy for the money. Fit and finish are fine. Upper and lower fit together very well. Stock was loose goosey but easy swap with a CTR.
September 2, 2018
Great barrel
Great barrel in an otherwise basic but solid rifle. I've never had any issues with any of my PSA rifles and but highly recommend the FN barrels when offered.
July 1, 2018
5 months ago
Very pleased!
I didn't quite know what to expect when this rifle arrived. I was very impressed with its fit and finish, but more importantly it shot quite well. I caught it on sale and when if it comes back on sale I will buy two more. Great bargain.
June 13, 2018
6 months ago

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