I bought a Pearce + 1 and used MagGuts with it. Ran great. So I thought about trying the Taran Tactical + 1's with MagGuts. I can squeeze the 8th round in the mag but it's hard to seat the mag and it will not rack. I even cut a coil off the stock spring and tried it. Sucks because I really like the shorter length on the Taran. So it's kind of useless using the Taran and MagGuts combo. All you can get is 7 rounds.