DPMS A-15 (M4A3-style) 5.56mm, 16″ barrel w/ 1-9 twist. Added a 1.5-4x scope with standard and illuminated reticle (red or green…)

Here’s a size comparison of the PS90 and the A-15:

While the A-15’s got range and muzzle energy on the PS90, the FN’s much better for urban terrain and house-to-house operations for the compact size (the P90’s even better with a 10″ barrel.)

UPDATE: I got a chance to take the DPMS out for a run Saturday, scoping her in for 250 yrds. It only took 9 rounds to get her zeroed, although the old scope seems to have given up the elevation adjustment ghost. Out to 25 yards, I have to give it about a 3″ bump up, but it’s bang on at 100-200 yards. A new scope may be in the offing.

No issues in 100 rounds of shooting, the recoil is the usual M4 quantity — perfectly manageable. (I had a M4 gas piston gun that, while manageable, did hit harder…) And, as expected, only a few magazines and the thing is pretty dirty. Function and accuracy were top-notch. Worth the $25 I paid, would be worth the MSRP of $800-850 I’ve seen.