Simple iron sight gun

[1986s4]

I love irons. It is simply more fun to shoot and hit the target with irons only. These new irons have surfaced recently and I have ordered them. By all accounts they really do add quite a bit of capability as compared to the A2 set up.

https://ultradyneusa.com/

It is claimed they are faster and more accurate.

I am also an iron shooter ! I heard about those sights and I would love to have some but they are pricey. I just built the iron sight gun that I wanted. Bow to stern: A2 FH, 14.5 Colt SOCOM barrel, Magpul SL handguard, A1 upper [not sure of brand but it's a Anchor Harvey forge], Colt BCG, LMT stripped lower, Colt LPK, Geissele buffer tube, buffer and super 42 spring, Colt buttstock. It's an odd combo but I like it. What really helped is the KNS pin head front sight with the little globe on the top painted gold.

[Caduceus]

I went similar with a KISS iron rifle; a few months ago I got a few PD trade-in Bushmasters from my LGS. Pulled the HBAR barrel off one, since it had an A2 upper receiver. Threw on a 11.5" Colt barrel with a FSB. Sort of a CAR-15 type of gun. It's sitting on a pistol lower currently though I do have a spare Form 1'd lower.

I'd done a irons only Dissy in the past and it shot great. Just didn't like having a screw-on carry handle and ended up selling it. Still, great shooter, soft and easy accuracy with that long sight radius.

[1168]

I did manage to get A1 handguards on the rifle. I had to modify the heat shields. The first range session will tell me how bad of a mistake this is. They are Brownell’s replicas, so I’m not super concerned.

[1168]

The modified A1 handguards are working just fine, surprisingly. Just have to be careful not to put my finger over the vent hole directly above the low-pro gas block.

Latest change is a G SSA trigger. It probably won’t stay in there for very long before it gets a ALG ECT, since that is more in keeping with the intended use as a “practice” gun. But I’m enjoying it for now.

This gun is super fun. I need to build a 1/7 twist 605 clone now.

[1168]

Friday I pulled the flash hider to replace the crush washer with shims, with the intent of mounting a M4SDk. I found that there is a false shoulder or step, almost exactly 9/16” in diameter. It held the 1/2” shims approximately a mm off the shoulder. So now I need to buy a 9/16” shim set to bump the shoulder forward. Or send it to a competent barrel guy to get cut back and rethreaded, since I now doubt the concentricity.

I stopped by a PSA store and found that every barrel on the shelf branded PSA has this false shoulder. So, it seems that this barrel meets PSA’s “specs” for threading. While this barrel is fulfilling my needs, it is not a true 5.56 chamber (which it is marked for), and it is not as suppressor friendly as most AR barrels. Keep this in mind if you are considering a PSA barrel.