This gives me a longer handguard (with M-LOK), ability to add rails, Magpul rear flip sight, and a nicer barrel finish compared to phosphate.
Since it has a pinned FSB…it’s a little front-heavy….but that’s the nature of the beast. The FSB is pinned well and the handguard is really on there. You can see my segment of Picatinny I added to the handguard’s M-LOK attachment points.
The next upper would be my favorite overall setup. 16″ mid-length with a 13.5″ M-LOK free-floating barrel and Nitride barrel.
Now you get the benefit of not having a FSB which helps the weight balance, and also having a free-floating handguard that increases accuracy by taking away contact points on the barrel.
For absolute reliability I’d still opt for the FSB model…but free-float AR’s are now the standard, you can attach a lot of stuff, and the gas block is really on there.
The last model is the 18″ .223 Wylde which is a relatively new chambering that will shoot BOTH 5.56 and .223 but offers a slight accuracy edge. Usually you’ll see the more accurate barrels in stainless which is what we have here.
This comes in an even softer shooting rifle-length gas system and 15″ M-LOK free-floating rail.
All came with mil-spec A2 bird-case flash-hiders that were installed correctly and didn’t require superhuman strength to take off and switch for some compensators.
PSA seems to have three tiers of barrels.
Premium: chrome-lined or CHF (cold hammer forged) that are made by FN
Standard: Nitride, Melonite, and stainless barrels
Basic: phosphate coated
The two 5.56 uppers I received were Nitride coated instead of regular phosphate…while the Wylde was stainless steel.
Nitride (two left black ones) is smooth while stainless is…stainless. The BCG on the right gives you a sense of what the rougher texture phosphate looks like. Nitride is supposed to be a little tougher and I like the smooth look.
I took apart the free-floating 5.56 and Wylde. Straight gas tubes…
And at least 35 in-lb of torque on the gas block with some sort of weird spill on the 5.56.
There’s not too much to say here…everything is where it’s supposed to be.
Ejection port door works
Forward assist works
Charging handle feels mil-spec and works
T-Markings present and easy to read
Evenly phosphate coated
If I had to nitpick…there’s some super small machining marks on the forward assist for two of the uppers I had. Not even sure you can see them in the pics.
The Magpul mid-length polymer handguard is what it is. A great update to the mil-spec plastic handguard that can’t attach anything.
The free-floating M-LOK handguards work too. The thin profile feels great in the hand…but could use a little more TLC in the CNC to get rid of sharper edges.
Also the 13.5″ is a little on the purple-ish side and a little off in orientation between receiver and handguard…but nothing an Allen wrench and a small turn didn’t fix.
The more “premium” Wylde upper was properly aligned and colored.
BCG + Charging Handles
As mil-spec as they come. Everything is as it should be and the gas-keys are properly staked.
The 5.56 uppers had phosphate coated BCGs (mil-spec) while the Wylde had a Nitride coated one.
If I had to nitpick again…the coating is a little bumpier than other phosphates I’ve used, but since only the rails of the BCG contact anything…there’s no real downside.
I found that the mil-spec phosphate BCGs were not MP marked (magnetic particle inspected) while the more premium .223 Wylde one was.
All the bolts were listed Carpenter 158 steel (mil-spec) but I’ve seen some PSA models where it is 9310 steel. Fine for civilian use but if you really want mil-spec…go for the Carpenter 158. The carriers were all 9620 steel (mil-spec).
Targets were placed at 100 yards and I shot at a pace of around 1 shot per 10 seconds. 10 shots each group.
Mil-spec is 3-4 MOA which means 3-4 inch groups at 100 yards. The FSB version falls within that (targets are 8″). With PMC Bronze doing the best of the plinking rounds at around 3 MOA.
Gold Match does the best but keep in mind it’s about $1 a shot. If you’re shooting that on a regular basis you’re probably looking at other rifles (Best AR-15s).
All in all…it’s as I expected. When there’s a front sight block there’s a whole lot of stuff touching the barrel which doesn’t help accuracy. Let’s see the free-floating model.
Much better! Looks like all the groups closed up. PMC Bronze and American Eagle are pretty even at what looks like 2 MOA. Gold Match is still the ultimate winner but it’s not THAT much off from PMC and AE.
When you have a free-floating handguard there’s less contact with the barrel and the accuracy shows.
Now how about the .223 Wylde we’ve forgotten?
Since this is a more premium barrel and made for accuracy…I did a break-in procedure with it as well as with PSA’s .224 Valkyrie (coming soon).
I cleaned the barrel and shot 1 round through before using copper solvent and a brush. Repeat the shoot and clean for 5x total. Then I changed it up to 5 shots before cleaning. Repeat 5x.
I then plinked ~200 rounds.
Finally, I was ready…
I used a different lower with a Triggertech trigger which I might actually like more than my Hiperfire (Best AR-15 Triggers). I started running low on Gold Medal so the last group only has 4 rounds.
It really looks like the FSB version instead of something that uses a tighter chamber and a free-floating handguard.
I’ll continue testing but right now looks like I would stick with PSA’s regular 5.56 offerings (free-floating of course).
The thing with PSA is that they are always in and out of stock of everything. And they have almost every combination under the sun…which makes it nice but also a headache to find what you want.
No fuss of building anything…out of the box ready to go.
I again like mid-length gas systems and it looks like their Nitride barrels are GTG. Their more premium selections (CHF) should be great as well if you have a little more to spend. I haven’t spent time with their regular barrels (phosphate), but other reviews vouch for them.
I personally like free-floating M-LOK handguards since they give you added accuracy and lots of space to put stuff. Unless you really want the look of a FSB…go for free-floating!
Already have a lower and want an affordable upper? There’s a bazillion options again…so here’s a search for 16″ mid-lengths to narrow it down a little: