Recent content by MSTN

Can't stop putting these together: TacSol receiver, Kidd trigger, Beyer barrel, Enoch Deep Six chassis, SB 1913A3 folding brace, Surefire Ryder 22 suppressor.

New blaster for a repeat customer: SanTan STT-15 billet receiver set; 14.5" Noveske HFCL barrel with pinned SF WarComp; Geissele MK16 rail; Geissele JP FMOS bolt carrier group; Geissele SCH; TriggerTech Adaptable model trigger set at 3 LB; Vltor A5 recoil system; Kahles K16i with SM1 reticle in...

The Brownell's BRN-180 upper is a real sleeper. Designed and produced by PWS for Brownell's, it is based on Eugene Stoner's landmark AR-180 short stroke gas piston, multi-lug rotating bolt concept. Thia upper will drop onto just about any AR' lower out there. Since there's no need for the AR-15...

Geissele SCAR Trigger Nightforce ATACR F1 1-8x24 in Spuhr SP-4026 mount KDG parts: SCARging Handle SAS Stock MREX Extended Rail

I'm referring to the barrel extension feed ramps. Please re-read my reply, above. My reply was not meant to be other than factual. I'm sorry you were offended. I got the term some time back from Noveske Rifleworks description of the feed ramps that now come on their FN-produced chrome lined...

Exactly what I said. I contoured and then polished the feed ramps. The M855A1 "steps" are now contoured and polished, making feeding much smoother. I didn't mention anything about adding a steel insert. The barrel extension is already made of quality steel, as hard as woodpecker lips, too.

The 6mmARC seems to be getting more and more popular. Shown here with 18" Proof carbon fiber barrel and hybrid STT-15 receiver set, JP FMOS bolt carrier group, TriggerTech Adaptable trigger, & Vltor A5 recoil system.

Give precision bolt guns a run for their money with this much lighter 9.5 LB big block custom 6.5 CM gas gun! Built by MSTN on a Seekins SP10 Builder's Kit (fully ambi) with the finest of components: Proof Research 20" SS 6.5 CM barrel with Rifle +2 gas system, weighing in at 3 LB 10 OZ = 58 OZ...

With factory ammo? Sub-MOA all day long. Occasional "refrigerator quality" one-hole groups! The 105 and 108 loads outshoot the 103 in this barrel.

This looks quite unique and very promising. I plan to try one myself soon: https://www.riflespeed.com

Everyone NEEDS a good .300 Blackout. And a suppressor for it, night vision, IR aiming module, lots and lots of both super- and sub-sonic ammo. This one is built on a SanTan Tactical ST-15 billet receiver set with a V Seven 10.3" SS barrel. This one incorporates a Geissele MK 14 9.5" rail and ACH...

Glad to hear that! Criterion barrels have the only reasonable gas port sizes I've run across. They all shoot considerably sub-MOA with capable ammo. They're easily the best bang for the buck I've encountered.

Nailed it. That's how you do it. Well said, too. All this got figured out a long time ago. PRI Gas Busters work pretty well, plain and simple. It's just about the only gun part I used 20 years ago that I still use. Reason - No better choice in a charging handle for reducing blowback. Yes...

DSG also bucked the mandatory COVID vaccine mandate on all employees imposed by DC on all .gov vendors. They deserve our support, IMO.

I recently learned that the B&T APC9K is actually a gateway drug to the whole B&T line.