Search found 9 matches

by 22_boomer
16 Jan 2012, 14:27
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

Valorius wrote:I'd kill to get my hands on an AR that takes FsN mags!
I just reworked the 5.7X28 AR so it will work better for me. I really do like this setup -- should make a nice varmint rifle and field rifle now. I may get back into working on a magwell adapter some time in the future.
by 22_boomer
14 Jan 2012, 13:47
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

I'd guess a larger gas port and/or softer recoil spring would be part of the equation. Reciprocating mass is a bigger issue with the mini too. Is your barel chambered for 5.7x28? My penchant for the Mini platform is robustness and ease of maintenance due to the availability of STAINLESS guns. My ba...
by 22_boomer
14 Jan 2012, 04:52
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

What I'm interested in is a carbine that uses FsN mags. Period. Your work was by far the best yet, and I'd certainly be interested in a kit made up of a magwell adaptor, bolt, carrier, and even a chamber bushing. I would VERY much like to see something for the mini14! What does the magwell adaptor ...
by 22_boomer
13 Jan 2012, 13:58
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

It's been a long time since I originally started this project and I have to be honest, I've not gotten much further except for changing out the handguard to full floater, changed the scope to one that's a bit more compact. The company that originally wanted to build these uppers kinda dropped out on...
by 22_boomer
06 Nov 2010, 17:32
Forum: PS90 & Other 5.7x28mm Rifles
Topic: Two NEW firearm models chambered for 5.7x28mm by EXCEL ARMS
Replies: 109
Views: 44900

Re: Two NEW firearm models chambered for 5.7x28mm by EXCEL A

THANKS FOR ALL THE INTREST!! EXCEL ARMS will be introducing the new products at the 2010 NASGW show next week.. The X SERIES line magazines have a capacity of 25 Rounds or a 10 Round. X-5.7P Retail is $715.00 (BASIC) X-5.7R Retail is $795.00 (BASIC) ACCELERATOR line has a 9 round capacity do to fit...
by 22_boomer
12 Nov 2009, 17:43
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

The part I liked most about the setup was the fact that the cartridge cases required only minimal amount of reforming before reloading. I know this is a pistol and PDW round but it makes a heck of a nice little small game hunting round out to 200 yards.
by 22_boomer
12 Nov 2009, 12:25
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

To be honest, I have not tried any powders faster than AA #9. I know that the factory ammo has a faster burning powder (something like True Blue) but I wanted to stay with powders I knew. AA #7 will actually work a little better than #9, giving velocities over 2900fps but the pressure is up there fo...
by 22_boomer
11 Nov 2009, 12:00
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

AS you all know, the 5.7X28 round is really nice. At first, I wanted a simple rifle that I could use for varmint hunting or target work -- something like a bolt action, so I built the straight pull AR-15 bolt rifle. After shooting the rifle for a while I figured it was a waist not to have the AR gas...
by 22_boomer
11 Nov 2009, 03:35
Forum: PS90 & Other 5.7x28mm Rifles
Topic: 5.7x28mm AR (not AR57)
Replies: 42
Views: 6347

Re: 5.7x28mm AR (not AR57)

The project rifle has been converted to gas operation (standard AR DI operation) and works with both commercial 5.7X28 ammo and reloads. Reloading can be done to much higher pressures limited only by the brass itself. Due to the length of the barrel (18.5")I started with slower burning powders but s...